JPS62213373A - Image forming device - Google Patents

Abstract

PURPOSE:To prevent a recording material from being consumed uselessly by prioritizing a mode forming images on both sides of the recording material and carrying out processing when the number of formed images required as specified in a mode forming an image on the single side of the recording material. CONSTITUTION:Image information read-out by an original reader 10 is filed in an optical magnetic disk device 12, and its desired part is transferred to a recording device 14 if necessary. The device 14 forms the image of the image information transferred from the device 12 on the recording paper. In that case the number of formed images is specified in the mode forming an image on the single side of the recording material through an arrangement number key in the operation part of the device 14. If two images are formed per one side, the mode forming images on both sides is prioritized. Images are distributed to both sides of the recording material to form. Simultaneously a mode using mixed small-sized recording materials is selected and processing is made. Thus the waste of the recording material can be eliminated.

Description

[Detailed description of the invention] [Technical field] The present invention relates to an image forming apparatus.

[Prior Art] In recent years, a new type of device has been considered that stores a large amount of image information in a file device such as an optical disk, and reads and prints a new type of file. When such an apparatus is used to form two A4-sized images on one side of an A3-sized sheet, for example, it becomes bulky when bound into a book. Another disadvantage is that when the sheet is folded in half and bound, the back side of the sheet is wasted.

[Objective] The present invention has been made in view of the above points, and an object of the present invention is to provide an image forming apparatus that can eliminate waste of recording materials.

〔Example〕

First, the outline of the control system of the apparatus according to the present invention will be explained based on FIG. IO is a document reading device that uses a reading unit to read a document to be read, and the details will be described later. 12 is a magneto-optical disk device,
The image information read by the original reading/scanning device 10 is filed, and desired image information is transferred to the recording device 14 as necessary. Note that the magneto-optical disk is not limited to this, and for example, optical disks, magnetic disks, floppy disks, etc. can also have a similar role. A recording device 14 forms image information transferred from the reading device IO or the magneto-optical disk device 12 on a recording paper, and forms a latent image on a photoreceptor using a modulated signal by a laser beam. 1 is an electronic file device main body, 22 is a control bus,
Through this, each terminal and each device in the electronic file l is controlled, for example, a recording device installed in the recording device 14! The controller 4 is connected to a control section (not shown) that controls various devices within the controller 4. Reference numeral 24 denotes a data bus through which data is transferred between each terminal and each section within the electronic file device main body l. 30 is DMAC (Direct Memory
Access Controller), by which data is transferred between each terminal and each device within the electronic file device body 1 via the data bus 24. 2
Reference numeral 6 denotes a control circuit for the electronic file device 1, which performs data transfer and control between each terminal and each device within the electronic file device 1. Reference numeral 28 denotes a page memory, which is specifically composed of a dynamic RAM. Image information read by the document reading device 10 is once stored here, and then transferred to the magneto-optical disk device 12 via the data bus 24. will be written to. Further, when recording on recording paper by the recording device 14, the image information read from the magneto-optical disk 12 is temporarily stored in the page memory 28 and transferred to the recording device 14 via the data bus 24. 32
is a memory in which information such as the address of the original filed on the magneto-optical disk is written.

16 is a paper folding device, 18 is a paper binding device, and 20 is a punching device, each of which is a peripheral device of the recording device g14,
By signals from the control bus 22, the recording device 1
Paper processing is performed on the recording sheet discharged from 4.

Furthermore, various input signals are input to the control circuit 26. For example, 34 is a print command signal 36 that instructs whether to record image information on either both sides or one side of the sheet, and various command signals explained at the time of reading the original and at the time of recording command are used for these signals. will be entered here.

! , disk device FIG. 2 shows an embodiment of an optical system, etc. of a magneto-optical recording/reproducing device as an optical information storage device according to the present invention. In FIG. 2, 40 is a semiconductor laser as a light beam generation source;
is a collimator lens, 44 is a polarizer, 46 is a polarizing beam splitter having a polarizing film, 148 is a total reflection mirror for changing the optical path, and 50 is a tracking mirror for tracking of a known galvano-mirror type, for example, in the direction of arrow C in the figure. It is rotatably provided. 54 is a magnetic coil used for recording and erasing information signals; 66 is a rotating shaft 7;
A magneto-optical disk is constituted by a disk having a recording medium 68 such as a ferromagnetic thin film layer on its surface, which is rotatable in the direction of the arrow in the figure with rotation center 0. 56 is a λ/4 plate used only for recording (for information reproduction and When erasing information, it is moved out of the optical path.), 7
2 is an analyzer, 58 is a condenser lens, 60 is a cylindrical lens, 6
Reference numeral 2 denotes a light receiving element divided into four parts, which is used to detect whether tracking and focusing are performed correctly based on the received light signal, and to obtain a reproduction information signal during reproduction. Reference numeral 52 denotes an objective lens barrel including an objective lens movable in the optical axis direction, and 64 indicates a recording medium 6 of a magneto-optical disk 66 by moving the objective lens barrel 52 in the optical axis direction.
This is an objective lens driving device for focusing a light beam on the object 8 and repeatedly defocusing the light beam at a high frequency during erasing.

It should be noted that the methods of recording, reproducing, and erasing information are well-known techniques and will not be described here.

2) Original Reading Device Next, the original reading device 10 (hereinafter referred to as a reader) will be explained using FIGS. 3(1) and (2).

FIG. 3(1) is a sectional view of the beamer and printer, and FIG. 3(2) is a sectional view of the structure of the reading section 10-2 of the beamer 10. An image sensor such as a CCD in which a plurality of light receiving elements are arranged in a line in order to read the image information of a document 102 held by a document cover 110 (or RF) and placed on a platen 101 made of a glass plate or the like. 103
is used. The illumination light from the light source 104 is the source fg102
It is reflected on the surface and is imaged onto the image sensor 103 by the lens 108 via the mirrors 105, 106, and 107. In addition, the light source 104, the mirror 105 and the mirror 106.10
7 is configured to reciprocate on the rail 110 at a relative speed of 2=1 in order to scan the entire area of the document. mirror 1
A light source unit consisting of 05, 106, 107 and a light source 104 is moved at a constant speed under PLL control by a DC servo motor 109. This moving speed is 90 m depending on the reading magnification on the outward journey from the left to the right in the figure.
Variable from m/sec to 360mm/Sec, always 630mm/'sec on return journey from right to left
It is.

The direction in which this optical unit moves is called the sub-scanning direction.
A direction substantially orthogonal to this sub-scanning direction is called a main-scanning direction. The light receiving elements of the image sensor +03 are arranged in this main scanning direction, and while reading each main scanning line of the document at a resolution of 400 dots/inch with the image sensor 103, the optical unit is moved forward from the left end to the right end, and then again. Move back to the left end to complete one scan. The image read by the image sensor CCD is serially stored in the page memory 28 as a digital signal of 1 or 0 indicating the image density, but the read information can also be compressed by a compression circuit (not shown). The movement during document reading will be explained using FIG. 3(1). League io manuscript feeding section 10-
1 (hereinafter referred to as RDF), one or more double-sided originals 102 are placed facing upward on an original placing table 111 by an operator. When the operator presses the start key on the operation panel of League IO, League 5 sends a document feed instruction to RDFIO-1, and RDFIO-
1 separates one document from the bottom of the document table 111 with a separation belt 112, passes through the conveyance section via a conveyance roller 113, and transfers it to the platen 101 with a conveyance belt 114.
transport upwards. In this state, the first side of the document is read. Then the transport bell! 114 rotates in the opposite direction, and the original conveyed onto the platen 101 is sent toward the conveyance roller 118 by the deflection cam 115. Transport roller ttS
The rear end of the sensor (not shown) is the deflection cam 1.
When it detects that it has passed 16, it temporarily stops. Thereafter, the conveyance roller 118 rotates in the opposite direction to the previous direction, and the original is conveyed in the direction of the conveyance roller 120 by the deflection cam 116.

Then, the conveyance roller 120 performs the same reversal as the conveyance roller 118, and the deflection cam 117 sends the original toward the conveyance belt 114 again. Through the above operations, the original is inverted and placed on the platen 101.

Then, the second side of the document is read. Then, the conveyor belt 114 is rotated in the opposite direction again, and the deflection cam! 15, the original is moved toward transport rollers 120, 119 and discharged. The document is controlled to stop accurately at the platen IO1J by a paper detection sensor (not shown, but including 121) attached to the paper path and a timing pulse generator (not shown) attached to the paper path. As is well known, when the reading of one sheet of the original is completed, the original is sent in the direction of the transport rollers 120 and 119 by the transport roller 114 and the deflection cam 115.Then, the transport roller 11
9, and is stacked on top of the original +02 on the original placing table 111.

A short bar (not shown) is placed on top of the original document 102 when copying starts, so that it is possible to detect the end of one set of original documents. Further, the league repeats the above operation until the set of documents placed on the document placement table 111 is completed.

Next, the operating section of the league 10 will be explained based on FIG. 4.

(2) Inputting the number of the read document +50 is a numeric keypad, and the number of the read document is input using the numeric keypad, and the input number is displayed on the display section 152. If there is an error in the entered number, press the clear key 154 to specify the binding direction of the original to be read. If the original is to be bound on the left, the left binding switch 156 is pressed, and if the original is to be bound on the right, the right binding switch 158 is pressed. If the document image is in the center of the document and you do not need to specify left binding or right binding, do not press the switch.

■Specification of double-sided/single-sided document Specify whether the original to be scanned is a double-sided original or a single-sided original.

For double-sided originals, switch 160. If it is a one-sided original, press the one-sided switch 162. This designation controls the document conveyance operation in the document reading device. A correction switch 164 is located below the double-sided switch 160 and the single-sided switch 162. This correction switch 164 pushes a document reading switch 166, which will be described later, and for example, presses a double-sided switch 16.
This is used when switching to the single-sided switch 162 after pressing 0, or when specifying the reverse. The reason for allowing mode switching from duplex to single-sided mode while scanning a document is as follows.
This is because there is no problem in the correspondence between the recorded address of the read original image and the page. In other words, the number of originals, the image recording address, and the reading order of the originals do not change even if you press the correction key.The only difference is the recording of the read original images on the magneto-optical disk depending on whether the original is double-sided or single-sided. The only difference is the calculation that determines the association between an address and a page.

■Specification of binding margin When recording the original image on a recording sheet and performing binding or punching if necessary, if you want to create a binding margin in advance and create it for the original image filed on a magneto-optical disk. press this binding substitution switch 168 and press the numeric keypad 150.
Enter the numerical value using . In this example, left binding is set as plus, so if you want to bind on the right, press the minus key 1.
Press 70 and enter the value.

■After performing a command similar to the original reading command, the original reading switch 1
Press 66 to start reading the original.

Note that the document reading device and the reading order are not limited to the above configuration (the paper feeding section and the paper discharging section may be different).

3. Recording device The recording device (printer) 14 will be explained based on FIG. 3 (1).

When the printer 14 is instructed to start by communication from the reader 10 or the disk device 12, it starts rotating each part of the printer and starts driving various high-voltage parts. When the predetermined preparatory operation is completed, feeding of recording paper is started from the designated stage (either the upper cassette 202, the lower cassette 203, or the paper deck 204) in response to a paper feeding start signal from the reader 10 or the disk device 12. When the recording paper reaches the registration roller 205, it is temporarily stopped, and a latent image is formed on the photosensitive drum 200 by laser light generated from the laser generator 201 and modulated based on the image signal from the reader 10 or the disk device 12. Refeed the paper at the appropriate time.

The latent image on the drum 200 is developed by electrophotography, which is a well-known technique, and the developed image is caused to pass through a fixing device 207 from a designated stage section 206 . As a result, an image is recorded on the first side of the recording paper. And deflection cam 20
8, the paper is transported to the duplex unit 14-1 side. The duplex unit 14-1 reverses the recording paper through the conveyance path 212 during double-sided recording, and rotates the recording paper through the deflection cam 21 during multiple recording.
1 to guide the recording paper through the conveyance path 25' to the photosensitive drum 200 again without reversing. Ru. When the required number of recording sheets with images recorded on the first side are stacked on the intermediate tray 214, the second side copy start instruction from the printer 10 or the disk device 12 causes the transport rollers 213 to move the sheets from the intermediate tray 214. The paper begins to be conveyed one by one, passes through the conveyance roller 217, and reaches the registration roller 205. Then, the image formed on the drum 200 is transferred in the same way as on the first side, and passed through the fixing device 207 and the deflection cam 208 to the conveyance roller 200.
09 and 210, an image is recorded on the surface of the sorter 13 via a paper folding device 16, a paper binding device 18, and a punching device 2o, which will be described later. Although the above-mentioned command signal has been described as being output from the reader 10 or the disk device 12, it may of course be a command from the control circuit 26. Also,
The sorter 13 notifies the operation mode (one of three modes: sort, group, and non-sort) through communication when starting the recording operation, so the ivy detects the paper using a sensor (not shown) attached to the conveyance roller 210. then it will operate according to the specified operating mode. For example, in the sort mode, when one recording paper is ejected to a bin, control is performed such that the recording paper is shifted up by one bin and the next recording paper is guided to the next bin. (This sorter is designed so that the bin moves to the upper limit and collates.) In group mode, the bin is moved up when the document changes, and in non-sort mode, it is always ejected to the upper bin. .

A double-sided copying operation is performed by the operations described above. Single-sided copying can be performed by omitting the reversing operations of the RDF and duplex unit 14-1 in the above explanation, so detailed explanation will be omitted. Furthermore, if the duplex unit is provided with a path for refeeding the recording paper without reversing it, a plurality of images can be superimposed and recorded on the same side of the recording paper.

Next, control of the direction and position of the image portion formed on the recording sheet by processing the image information signal will be described. First, referring to the direction of the image portion formed on the recording sheet, FIG. 5(a) is a view of the original viewed from the front. The erect image and inverted image referred to here are when the operator looks at the recording sheet recorded by the recording device 14, as shown in FIG. 5(b).
When the image portion is formed in the direction shown in FIG. 5C, the image is called an erect image, and when the image portion is formed in the direction shown in FIG. 5C, the image is called an inverted image. This kind of switching of the direction of the image part is performed by transferring the image information to one or more DRAMs (D
y na m a t ic Rando
m a c c e s s M e m o r
This can be realized by storing the information in the page memory 28 configured by y) and controlling the readout start position and readout direction.

FIG. 6 shows a DRAM which is a page memory 28, 281 is a memory cell, 282 is a row address, 28
3 is a column address, 284 is a data output line, 285 is a data input line, and 286 is a write enable signal. The data is stored on memory cell 281 at row address 2.
82 and column address 283, one bit is stored at each point.

When the original image information as shown in FIG. 5(a) is stored in the page memory, the write start address is set from point A, and the laser beam is exposed and scanned on the photoreceptor drum 200 to deposit the toner onto the recording sheet. When the image is transferred, a royal image is obtained as shown in FIG. 5(b), and if the writing start position is set at point B, an inverted image is obtained as shown in FIG. 7(c).

Next, to change the position of the image area with respect to the recording sheet, change the relative position between the leading edge of the toner image corresponding to the latent image formed on the photoreceptor drum 200 in the transfer unit and the leading edge of the recording sheet. achieved. Specifically, the timing of feeding the recording sheet by the registration rollers 205 may be changed, or the timing of exposure scanning by laser light may be changed.

4. Paper Processing Device Next, the binding device 18, paper folding device 16, and punching device 20 will be explained based on FIGS. 7, 8, and 9, respectively. These paper processing devices are connected to the recording device main body,
These controls are performed by a control 22.

Furthermore, these paper processing devices do not necessarily have to be connected to the recording device main body, and can be disconnected from the recording device as necessary. .

(A) Paper binding device FIG. 7 is a diagram showing the configuration of the binding device. Conveyance roller 2
The recording sheet S1 conveyed from 10 is conveyed by constantly rotating conveyance rollers 300a and 300b, and its selected position is adjusted by a stopper 306. This is done as follows. The recording sheet, which is released from the gripping state of the conveying rollers 300a and 300b and has lost its conveying force, stops on the temporary fixed guide 302. After that, the feeding roller 304 that oscillates around the point 305 presses the recording sheet,
After rotating in the direction of the arrow for a certain period of time, it returns to the solid line position. At this time, the leading edge of the recording sheet hits the stopper 306 and stops.

The leading edge of the recording sheet S2 to be fed next is also adjusted by the stopper 306 in the same manner, and is stacked on the recording sheet Sl that has already been fed and stopped. After all the recording sheets subjected to the binding operation are stacked on the fixed guide 302, or when the limit capacity number of sheets for the binding operation has been reached, the binding section 307 descends and binds the recording sheets. The binding direction is as shown in FIG. 7(b).

After the binding operation, the binding section 307 rises and returns to its original position, and the stopper 306 also rises to form a conveyance path. Thereafter, the feeding roller 304 descends to the position shown by the broken line, contacts the recording sheet, and rotates. At this time, the rotation time of the roller 304 is such that the leading edge of the recording sheet is transported by the conveying rollers 301a and 301b.
It is sufficient that it is held in its mouth to obtain conveying power.

Note that when the binding device 18 is not operated, the stopper 306 is raised to form a conveyance path, and the feeding roller 304 is at the position indicated by the broken line, and the recording sheet is continuously rotated to pass over the fixed guide 302. is pressed to transport the recording sheet to the transport rollers 301a and 301b. The binding section 307 is located on the recording sheet conveyance path so as not to prevent the sheets from advancing.

Note that the binding section 307 is movable in the sheet conveyance direction by a drive device (not shown), so that the position of the binding section can be changed.

Further, in FIG. 7(b), reference numeral 308 is a holding portion of the paper binding needle, and this portion presses down the recording sheet. 310
is the needle part of the paper stitching needle.

(B) Paper folding device FIG. 8 explains the operation of the paper folding device. FIG. 8(a) shows the process from when the recording sheet is conveyed to when its leading edge position is adjusted. FIG. 8(b) shows the paper being folded. FIG. 8(C) shows how the paper is transported out after being folded.

(1) When the first recording sheet is fed, it is held by feeding rollers 310a and 310b. The roller 310a continues to rotate until the leading edge of the recording sheet hits the stopper 312. The stopper 312 is movable in the direction of the arrow according to the length of the sheet in the transport direction by a drive device (not shown), and its bending length can be made variable. Here, the folding length of the sheet is determined by the size of the selected sheet. In FIG. 8, a pair of rollers 313 and 314 is shown for improving sheet conveyance.

Rollers 313 and 314 are connected to points 318 and 315, respectively.
It is oscillating around. A support member 317 is made of an elastic material such as Mylar film and supports the recording sheet from below, and has a cutout at a position corresponding to the roller 314.

When the first recording sheet is fed, the roller 31
Reference numerals 3 and 314 convey the recording sheet.

(2) When the second recording sheet is fed, the roller 310a descends to the solid line position, and the sheet is advanced by its rotation. As for the roller 313, the tip of the sheet is the roller 31.
When the roller 310a reaches the vicinity of the solid line position 3, it is retracted to the position shown by the broken line, but when the leading edge of the recording sheet exceeds the position of the roller 313 shown by the solid line, the roller 310a stops rotating and is retracted to the position shown by the broken line. After this, the roller 313 enters the position shown by the solid line and starts rotating, and stops rotating after the leading edge of the sheet reaches the stopper 312. The above steps are repeated for the third and subsequent sheets.

Next, FIG. 8(b) will be explained.

The trailing edge of the recording sheet is sandwiched between rollers 310a and 310b. The roller 314 has been retracted to the position indicated by the broken line. The upper paper folding member 311a descends and folds the sheet at 90° with the lower paper folding member 311b. At this time, the elastic support member 317 is bent by the sheet to the position shown by the broken line, but returns to the position shown by the solid line after the paper folding is completed.

FIG. 8(C) explains the operation of conveying a folded recording sheet. The rollers 310a and 310b holding the rear end of the folded recording sheet start rotating. The sheet is further folded and conveyed by rollers 313 and 314, and is folded by rollers 316a*316.
sent to b. Note that the stopper 312 has moved to a position away from the conveyance path.

Although FIGS. 8(a) to 8(C) show an example of folding a plurality of sheets, folding can also be performed for each sheet by performing the same operation.

(C) Drilling device FIG. 9 shows the drilling device.

The basic operation is the same as that of the binding device 18 shown in FIG. 7. The sheet conveyed from the paper folding device 16 is conveyed by constantly rotating conveyance rollers 320a and 320b, and finally its leading end position is adjusted by a stopper 324.

The leading edge position of the recording sheet is regulated as follows.

The sheet that has been released from the gripping state of the transport rollers 320a and 320b and has lost its transport force is moved to the temporarily fixed guide 323.
Stop at the top. Thereafter, the feeding roller 325 swinging about a point 326 presses the sheet, rotates in the direction of the arrow for a certain period of time, and then returns to the solid line position. At this time, the leading edge of the recording sheet hits the stopper 324 and stops. The leading edge of the recording sheet S2 to be fed next is similarly adjusted by the stopper 324, and is stacked on top of the sheet S1 that has already been fed and stopped.

After all the sheets to be punched are loaded on the fixed guide 323, or when the maximum number of sheets for punching is reached, the punching section 322 descends from above and punches holes in the sheets. After the drilling operation, the chamber punching portion 322 rises and returns to its original position, and the stopper 324 also rises to form a conveyance path. Thereafter, the feeding roller 325 descends to the position shown by the broken line, contacts the sheet, and rotates to feed the stacked sheets one by one from above. When the sheets are bound by a binding device, it is only necessary to feed them once.

Note that when the punching device 20 is not operated, the stopper 324 is raised to form a conveyance path, and the feed roller 325 is located at the position indicated by the broken line and rotates continuously to prevent the sheet from passing over the fixed guide 323. is pressed to transport the sheet to the transport rollers 321a and 321b. The perforation portion 322 is located on the sheet conveyance path so as not to prevent the sheet from advancing.

Now, the operation of each device has been explained above, and next, the steps of forming image information as a toner image on a recording sheet by the recording device and performing paper processing as necessary will be described.

This recording device/device uses: ■ A mode in which one image information is recorded on one side of the recording sheet; ■ A mode in which one image information is recorded on each side of the recording sheet; ■ A mode in which two image information are recorded only on one side of the recording sheet. (2) Mode for recording two pieces of image information on each side of the recording sheet Recording in these four modes is possible.

First, referring to FIG. 10, a description will be given of operations for recording document image information stored on a magneto-optical disk or the like onto a sheet using the recording device 14 and performing paper processing as required.

(1) Designation of read file number To designate the file number of the document image information to be read and recorded, a desired file number is input using the numeric keypad 400, and the input file number is displayed on the display section 402. When it is necessary to correct the input, press the clear key 404.
Press to re-enter.

(2) Read the file corresponding to the file number input in (1),
A command to read from the magneto-optical disk device 12 is issued by pressing the read button 406.

When the head section of the magneto-optical disk device 12 searches for the specified file number, the read button lights up with a built-in lamp, but when the specified file number cannot be searched, the read button lights up. return.

(3) Single-sided, 2-sided recording command This is a command to specify whether the image created by the recording device 14 is to be formed on one side or both sides of the recording paper.
``Single-sided switch'' 40 that supports single-sided recording mode
8 or “Double-sided switch” 41 compatible with double-sided recording mode
Press one of the 0 switches. At this time, the lamp built into the switch that is pressed lights up.

(4) Instructing the number of recorded images to be arranged Instruct whether one or two images are to be formed on one side of the sheet. Specifically, the arrangement number keys 412, 4
Press one of 14. In this device, when the number of placements is 1, an A4 size recorded image is formed on one side of the recording sheet of the A4 cassette installed in the recording device, and when the number of placements is 2, an A4 size recorded image is formed on one side of the recording sheet from the A3 cassette. A4
It is formed by juxtaposing two images of the same size.

Note that the image size and recording sheet size are not limited to these.

(5) Binding position command When in double-sided recording mode and the number of recorded images is two,
Two aspects are possible. FIG. 11 shows two modes. One is a mode in which the paper is bound to either the left or right side of the sheet, and the order of the pages is the same when turning one page at a time. , and others are modes in which the binding position is set at the center of the sheet and the pages are in the same order when turning over one page at a time. This selection is made by switch 41
This can be achieved by pressing either 6,418.

(6) Selection command for unified/mixed mode of recording sheet When the number of images arranged on one side of the sheet is two, no image is formed on the recording sheet depending on the number of pages to be recorded and the double-sided/single-sided recording mode. There may be parts. For example, in double-sided recording mode, the number of pages J is J = 4 + 2 (K = 0
．． 1. ...), there is a sheet that is not recorded on the back side, and the number of pages J in single-sided recording mode is J=
2, there is a sheet in which half the area on one side is not imaged. Therefore, in order to avoid wasting sheets, it is necessary to mix A4 size recording sheets. For example, in the double-sided copy mode mentioned above, the number of pages is J = 4 + 2 (K =
0.1°...), the last sheet is A4 size, and it is recorded on both sides of the sheet, and in single-sided printing mode, the number of pages is J = 2 + 1 (K = 0.1...).
), the last sheet should be A4 size and the information should be recorded on one side of that sheet. That is, even when the number of printed images is two, it is possible to avoid waste of printing sheets by mixing printing modes in which the number of printed images is one, depending on the number of pages. On the contrary, there is also a mode in which the number of layouts is two regardless of the number of pages, that is, a mode in which recording is performed on recording sheets of the same size (A3). Selection between these two modes is achieved by pressing either the unified switch 420 or the mixed switch 422.

(7) Setting the number of copies Set the number of copies of the file number specified in (1). Specifically, the number of copies is input using the numeric keypad 400 used in (1) and displayed on the display section 424.

After it is confirmed by the read command (2) that the file number to be read exists on the magneto-optical disk, the number of copies is input using the numeric keypad 400. At this time,
To correct the file number to read, use the numeric keypad 400.
Press the correction key 426 located next to , and then enter a new file number.

(8) Image Density Setting Adjustment of the density of the image formed on the recording sheet is performed using the density adjustment lever 428.

(9) Binding Margin Creation Instructions If you want to automatically create a binding margin that allows binding or punching on the recording sheet, press the binding margin creation switch 430. If there is no binding margin for the image filed on the magneto-optical disk, a certain value of binding margin is automatically secured, and if there is a binding margin, the binding margin creation switch is pressed or not. , an image with a pre-formed binding position is formed.

Whether or not a document has a binding alternative is specified when reading the document, and the instruction information is written on the magneto-optical disk, and it is determined by reading the information.

(10) Specifying the binding direction The binding direction of the copy created by the recording device is the 10th
This is designated by the binding direction designation key 432 in the figure. By the way, the binding direction of the original is input when inputting the original image information to the magneto-optical disk, so when the desired file number is searched by the read command in (2), the binding direction information is read and the binding direction is matched to that direction. A lamp built inside the binding direction designation key 432 lights up. If a recording command is issued without specifying the binding direction, the binding direction of the sheets is determined based on the binding direction information written on the magneto-optical disk. This is because copies are made in a form similar to originals, and there is an operational advantage in that the operator does not have to specify the binding direction for copies. For example, if the original binding direction is left binding and the copy is desired to be bound right, press the right binding key 436 to determine the binding direction.

(11) Adjustment of binding allowance for copies When adjusting the binding allowance on the sheet, first press the binding allowance adjustment switch 438. Then, on the display section 402,
Binding substitution information filed on the magneto-optical disk is read out and displayed. For example, if the binding substitution is displayed as O and the binding substitution is input using the paper binding key 400, the display section 4
The value is displayed in 02. If you want to reduce the number of binding locations, first press the minus key 440, then press the numeric keypad 40.
Enter the numerical value by 0. Alternatively, instead of expressing the binding allowance numerically, when inputting the document image information, enter information as to whether or not the original has sufficient binding allowance for binding or punching. The display unit 402 may display "Sweet termite" or "Sweet termite".

When the binding margin adjustment switch 438 is not pressed, an image is automatically formed on the sheet with the binding margin determined for reasons described later. It is also possible to visually check the binding position of sheets ejected from the recording device during the recording operation and change the binding position when it is determined that adjustment is necessary. However, even if a copy binding softness adjustment command is issued after the image information has been written on the photoreceptor by a laser beam and before the writing has finished, that command will not be applied to the next one. This is effective for writing image information onto a photoreceptor using a laser beam. Specifically, the input binding margin adjustment value is recorded in the memory 32, and based on this value, the start of exposure scanning or the timing of sheet feeding by the register roller is controlled. Note that it is not necessary to adjust the binding position of this copy; unless otherwise specified, the binding position is 0, that is, the image information on the magneto-optical disk is recorded as is on the recording sheet by the recording device. .

(12) If a paper processing device such as a paper binding device 18, a punching device 20, and a paper folding device 16 is connected to the paper processing command recording device 14, and you want to perform paper processing on the recording sheet, the paper processing You can and can give commands.

In FIG. 10, 450 is a punching command switch that issues a punching command, 452 is a paper folding command switch that gives a folding command, and 454 is a binding command switch that gives a binding command. In the double-sided recording mode explained in the binding position command operation in (5), and when there are two images to be arranged, when the paper binding command is issued using the paper binding command switch, the corresponding positions will be set. Paper binding is performed.

(13) Recording command Set the recording and/or paper processing conditions described in (1) to (12) above, and send the print command to the print switch 4.
Pressing 60 starts the recording operation.

In addition, if you want to cancel the recording operation in the middle of the recording operation, press 5TO.
Press P switch 462.

Next, a mode in which one image is recorded on one side of a sheet will be explained.

To select this mode, the recording operation mode and paper processing instructions shown in FIG. 10 are issued. This is shown in the flowchart of FIG.

First, the number of locations l for recording one image on one side of the sheet is
”Press the switch 412, i.e., small size recording),
Next, press the "single-sided" switch 408 to command single-sided recording. Next, paper processing is designated as necessary, but the paper folding command is not accepted because it is meaningless even if there is a paper folding designation. Specify whether or not to create a binding margin. When there are paper processing commands for punching and paper binding for a sheet on which an image has been formed, if the punching position and the paper binding position are performed at the same position, the effect of the paper binding action will be reduced. FIGS. 13(C) and (d) show this. In FIGS. 13(a) and (b), Ll is the paper binding position when paper binding is performed independently, and L3 is the hole punching position. If it is set to a position where this is performed independently, depending on the sizes of Ll, I, and 3 and the diameter of the hole, the paper-bound needle may be damaged by the punching device as shown in FIG. 13(C). Further, as shown in FIG. 13(d), if the distance between the paper binding needle and the hole is too short, there is a high possibility that the sheet will be torn near the hole. Therefore, if there is a paper binding and hole punching command,
Each of them moves a small distance from the position where paper processing is performed independently.
Perform at position (>L3). That is, in FIG. 12 (2), if there are both a paper binding command and a punching command, the paper binding position is set to L2, and if there is a paper binding command and no punching is specified, the paper binding position is set to Ll. (Steps 21-24).

In the case of single-sided mode processing, in Figure 12 (3), the total number of pages of desired file information to be printed is stored in the memory 3.
2, input it to the variable MO, and substitute MO to the variable M indicating the print page (step 31). Then, the variable N indicating the number of copies to be printed is incremented by one (step 32), and compared with the set number of copies to be printed (step 33). If the set number of copies have not been printed, a small-sized recording sheet is selected (step 34), the image of page M is read out, and the photosensitive drum is exposed and scanned with a laser (step 35). Here, the exposure scanning of the M-th page image is performed as shown in FIG. 12 (5). First, the M-th page image is read out from the disk device. Step 7
8), it is determined whether the left binding mode is set or not, step 79), and if the left binding mode is specified, the DRA
Images from page M to page M are read out in the forward direction and exposed and scanned onto the drum (step 80). Furthermore, if the right binding mode is designated, the data is read from the DRAM in the reverse direction and exposure scanning is performed (step 81). Then, it is printed on a recording sheet and discharged to a paper processing device (step 39). If the total number of pages of the read file information is one page, the paper binding operation is meaningless and the input is ignored (step 40).

In the case of multiple pages, decrement M by 1 in order to make the next read (recorded) page one page earlier (step 41), and determine whether all pages have been printed (step 41). If not, the process returns to step 34 to record the next page, and if all pages have been completed, it is determined whether there is a paper binding command or not.Step 43
), if there is a command, performs paper binding operation (step 45),
It is determined whether or not there is a drilling command (step 44), and if there is a command, the drilling operation is performed (step 46). The copies are then discharged to the sorter 13 and repeated until the set number of copies is reached.

Incidentally, in the exposure scan in step 80.81, the orientation of the image and the position of the image with respect to the sheet are items that must be taken into consideration. When creating one image on one side in single-sided mode, when determining the direction and position of the image area, check whether the original whose image information is filed on the magneto-optical disk is a single-sided original or whether it has both sides. (2) The amount of binding margin is related, and the exposure scan also changes depending on whether paper processing is performed by a paper binding or punching device linked to the recording device or not. Each will be explained below.

(1) When the input document is a single-sided document and there is no binding margin. In this case, when a binding margin is required, the position of the image area is set by pressing the binding margin creation switch 430, and the binding margin is secured as required. This is accomplished by pressing the binding margin adjustment switch 438 accordingly and adjusting the binding margin using the numeric keypad.

(A) When binding or punching paper To align the binding or punching position and binding direction,
It is necessary to control the position of the binding or punching device and the orientation of the image area. For example, when the position of the binding unit 307 of a paper binding device is fixed at the downstream side in the conveyance direction of the sheets, in order to create a left-bound image, the image is erected onto the photoconductor using a laser beam. To create a paternally bound image, the laser beam is scanned for exposure onto the photoreceptor so that the image becomes an inverted image (see FIG. 14). Here, the photosensitive drum 20
The dashed line above 0 represents a latent image. Also,
If the binding part is movable, if you want to create an image with left binding, you can place the binding part in position (a), and if you want to create an image with paternal binding, you can place the binding part in position (C).

(B) When securing only the binding margin In this case, the image is recorded as an upright image to make it easier to judge whether or not to adjust the remaining binding amount.The position of the image is determined by the binding margin creation switch 430. is specified, the binding margin is moved by a certain length in the direction in which the binding margin is created.The value of this constant length is stored in the control unit 26.The binding margin amount adjustment switch 438 is also used to adjust the binding margin. You can increase or decrease the amount.

(2) When the input original is a single-sided original with a binding margin (A) When the binding direction of the input original is the same as the specified binding direction of the copy In this case, the binding margin direction and remaining binding amount of the original Since this information is input as image information when it is filed on a magneto-optical disk, by simply pressing the print switch 460, a recorded image having a binding remaining amount equal to the binding remaining amount of the original can be obtained.

(a) When binding or punching paper The direction of the image area may be controlled by controlling the position of the paper binding device and the direction of the image area so that the binding position and binding direction are aligned.

(b) When securing only the binding margin The direction of the image area is an erect image, and the reason is the same as when securing the binding margin when the input document is one-sided and has no binding margin.

(B) When the binding direction of the input document is different from the designated binding direction of the copy In this case, when creating the binding margin, the position of the image area must be taken into consideration. For example, if the original is left-bound and the copy is to be bound on the right, as shown in Figure 15(a)'C, and as shown by the broken line in Figure 15(b), the image The position of the part is L2-Ll (L
2>Ll) to the left in FIG. 15. For this purpose, it is sufficient to control the timing of exposure scanning corresponding to the leading edge of the recorded image area by the laser beam and/or the timing of starting feeding of the recording sheet by the registration rollers.

Further, when it is necessary to adjust the remaining amount of stitching, the "stitching amount adjustment switch 438" is used as described above.

(a) When performing paper binding or punching In this case, it is only necessary to control the position of the paper binding or punching device and the direction of the recorded image area so that the binding or punching position matches the binding direction. This is the same as when the input document is a one-sided document and there is no binding margin.

(b) When securing only the binding margin, record as an upright image. The reason is that the input manuscript is a one-sided manuscript,
This is similar to simply securing a binding margin when there is no binding margin.

(3) When the input document is a double-sided document and there is no binding margin. In this case, the form recorded on the magneto-optical disk is the same as when it is a single-sided document and there is no binding margin.
The direction and position of the recorded image portion is determined.

(4) When the input document is a double-sided document with a binding margin. In this case, the direction of the recorded image area is the same as in the case where the input document is single-sided and has no binding margin. However, when a binding margin is required, the position of the recorded image area must be considered separately depending on whether the binding direction of the input document and the designated binding direction of the copy are the same or different.

In the following description, the characters in [ ] indicate cases where the binding direction of the input document and the specified binding direction of the copy are different.

16(a) shows that the input document is a left-bound double-sided document, and FIG. 16(b) shows that the front side of the input document is an image area A, and the back side is an image area B. (C) shows the position of the recorded image area when the specified binding direction of the copy is left binding, which is the same as the binding direction of the input original, and (d) shows the position of the recorded image area when the specified binding direction of the copy is right binding, which is different from the binding direction of the input original. The position of the recorded image area is shown in the case of . Here, A', A
' and B' and B' indicate recorded image areas corresponding to image areas A and B of the original, respectively. As is clear from FIG. 16, the recorded image portion A'[A'] is left-bound [right-bound], which is the same [different] as the binding direction of the input document.

Therefore, as explained above in the section where the input original is a single-sided original with a binding margin, and the binding direction of the input original and the specified binding direction of the copy are different, the binding direction of the input original and the specified binding of the copy are different. If the directions are the same [different], a desired recorded image can be obtained by changing the recorded image position on the back side [front side].

FIG. 17 shows the case where the input document is a right-bound double-sided document, but since it is clear from the description of FIG. 16, detailed explanation will be omitted. Here, (a) indicates that the input document is a double-sided document with right binding, (b) indicates the front and back sides of the input document, and (C) indicates that the specified binding direction of the copy is the same as the binding direction of the input document. Indicates the position of the recorded image area for right-hand binding, and (
d) shows the position of the recorded image area when the designated binding direction of the copy is left binding, which is different from the binding direction of the input document. If it is desired to further adjust the position of the recorded image area, the binding margin 1 adjustment switch 438 is used as described above.

Regarding exposure scanning, there are some other techniques.

There are technical issues and I will explain how to solve them.

(1) Concerning direction change of the recorded image section It has been explained that when reading image information to be recorded from the DRAM, the direction of the recorded image section can be changed by changing the reading start position of the row address and column address. However, when one file number for which a print command is issued is composed of multiple pages, and even if there is a command to change the direction of the image area during print processing, the number of copies of one file is When recording is completed, it is necessary that the direction of the image area of each member is the same.

For example, after printing the second page, a command to change the direction of the recorded image section is issued, and if the control device 26 changes the direction from the third page based on that command, the recorded sheet will consist of an erect image and an inverted image. Not only is it inconvenient for the operator to have to align the orientation of the images, but if the sheet is punched or bound, part of the image may be hidden or a hole may appear. Therefore, once the image of the first page has been recorded on the sheet, even if a direction change command for the image section is input thereafter, the control unit 26 ignores the direction change command until recording of one file is completed. However, the readout direction of the row address and column address is configured so as not to change. This only applies to the mode in which one image is recorded only on one side of the sheet. The same applies to the mode in which two images are recorded on each side of the sheet.

(2) Paper binding and page output order When binding sheets ejected from a recording device,
The first page of the sheet has the pressing surface of the paper binding needle (as shown).
Controls the order of pages ejected from the recording device. Figure 3 (1)
Referring to FIG. 12, it can be seen that the recorded image formed on the recording sheet is face up, and from the flow diagram of FIG. 12, when recording of one file is completed, the first page becomes the topmost page. Further, the paper binding device 18 shown in FIG. 7 operates from above the sheet, and the direction of the paper binding needle is the direction shown in FIG. 7(b), so the pressing surface 308 of the paper binding needle presses down the first page. Therefore, when viewing recorded images, the first page, which is frequently folded at the paper binding position, is less likely to peel off. In addition, when the binding section 307 of the paper binding device 18 is located below the sheets, the paper conveyance path is configured such that the toner image on the sheet is on the bottom side at the paper binding position, and the toner image is recorded. Page order is page 1-2 →・・・・・・・・・・・・・・・
You can do it in this order. In a paper conveyance path where the image on the sheet is on the upper side as shown in FIG. 3(1), there is an effect that the recorded η image can be visually confirmed.

This is not only a mode that records one original image on only one side of the sheet (, ■ A mode that records one image on each side of the sheet, ■ A mode that records two images only on one side of the sheet, ■ A mode that records two images only on one side of the sheet, ■ Both sides of the sheet The same applies to the modes in which two images are recorded each.In addition, in the modes of ■ and ■ above,
It will be understood that the first page sheet refers to the side of the sheet that includes the image on the first page.

Next, a mode in which one image is recorded on each side of the recording sheet will be explained.

To select this mode, from among the multiple switches on the operation panel shown in FIG. If processing is necessary, press the "paper processing designation switch". Next, press the "print" switch 460, which is a recording start command, to start recording. Based on FIG. 18 and FIG. 3 (1) The movement of the sheet in this mode will be explained.

Let's take as an example a case where one manuscript consists of 8 pages. - This page number is input when the document image is filed in the electronic file device 12, and is read out when recording. When recording on the surface of a sheet, the sheet fed from the small size sheet cassette is transferred to the conveying device 20 after the visible image is transferred.
6, the image is transported to a fixing device 207 and fixed. After fixing, the conveyance path of the sheet is switched by the guides 208 and 211 in the direction toward the intermediate tray 214, and the sheet is transferred to the intermediate tray 214 with the visible image on the sheet facing up.
be loaded to.

When recording on the front surface, the exposure device 201 outputs even-numbered pages, and the order is 2nd page → 4th page →
6 pages → 8 pages. After the front side recording is completed, in order to record on the back side, the feeding roller 21 is moved from the intermediate tray 214.
The sheet re-fed by step 3 is reversed, and after transferring the visible image on the photoreceptor, it is fixed by a fixing device 207, discharged from the main body by a guide 208, and subjected to paper processing as necessary.

When recording on the back side, the exposure device 201 outputs odd-numbered pages. The feeding roller 213 is connected to the intermediate tray 214
Since the stacked sheets are fed from the top, the order of output from the exposure device 201 is 7th page → 5th page → 3rd page → 1th page.

FIG. 18 shows the relationship of page order.

Alternatively, after recording the image of the 8th page on the sheet, the sheet is stored upside down in the intermediate tray 214, and the sheet is fed again, the image of the 7th page is recorded, and the sheet is ejected. good. That is, only one seat is stored in the intermediate toilet. Then, from the exposure device 201, 8→7→6→
The pages may be output in the order of 5→4→3→2→l pages.

Next, regarding the double-sided recording mode for small size sheets,
This will be explained based on FIG. 12.

When the duplex mode is determined in step 13, MO is substituted into MA in the same way as in the single-sided mode, N is incremented by 1, and it is determined whether or not the set number of copies has been printed (steps 51 to 53). . Next, in step 5, it is determined whether the total number of pages MO of the desired file information is an even number.
4) If the number of sheets is even, the process goes to step 61. If the number of sheets is an odd number, in order to print the last page, MO is substituted for M indicating the print page (step 55), a small size recording sheet is selected (step 56), the Mth page image is read out and printed on the photoreceptor. The paper is exposed and scanned by a laser (step 57), printed and discharged to a paper processing device (step 58). Then, it is determined whether the total number of pages is one (step 59), and if it is one, the process returns to step 52 and printing of the required number of copies is repeated. If it is not one,
The number of the last even-numbered page is assigned to the variable M^ (step 60). Step 6
1), Select a small size sheet Step 62), M
The image of the page is read out, exposed and scanned (step 63), printed and stored in the intermediate tray (step 64). Then, in order to print only even-numbered pages sequentially, M is incremented by two (step 65), and it is determined whether or not the last even-numbered page has been printed (step 66), and if the last page has not been printed, step 62). Return to and repeat until the last even-numbered page is printed. If the page x% f& has been printed, MA-1 is substituted for M in order to print the last page of the unprinted odd-numbered pages (step 67), and the even-numbered pages stored in the intermediate tray are printed. The topmost sheet of the sheets is selected and fed (slab 68), the image of the Mth page is read out and exposed and scanned (step 69), and printed and discharged to the paper processing device (step 70). Then, decrement M by two to print the odd pages sequentially (step 71).
, it is determined whether or not the first page has been printed (step 72); if not, the process returns to step 68, and the process is repeated until the first page is printed; if it is, it is determined whether there is a paper binding command or not (step 72). 73), if there is a command, it is determined whether the total number of pages is more than 2 pages or not (step 73), and if it is more than 2 pages, a paper binding operation is performed (
In step 75), if there are less than two pages, the paper binding operation is meaningless and is ignored. Then, it is determined whether or not there is a drilling command (step 76), and if there is a command, the drilling operation is performed (
Step 77). Then, the process returns to step 52 and is repeated until the set number of copies have been printed.

In determining the direction of the recorded image in step 57 of exposure scanning with a laser beam, the problem is the binding direction of the sheet and the consistency with the device when binding or punching the paper.

When creating a binding margin, the position of the recorded image area becomes an issue. These are related to the binding direction and binding margin of the input document. These will be explained below.

(1) When the input document is a single-sided document with no binding margin (A) When binding or punching is performed In this case, the paper binding device (punching device) is used to align the binding or punching position and binding direction. ) position and
It is necessary to control the direction of the recorded images on both sides of the sheet. The areas indicated by broken lines in FIGS. 19(a) and 19(b) are the image portions of the input document, and when the operator specifies left binding, the image portions are recorded by the length of Ll in each case to create a binding margin. By shifting the position of Figure 19(c)
An image with a binding margin as shown in is obtained. Ll is set in advance, and in a mode where the input document is a single-sided document and there is no binding margin, when a binding margin is required,
In order to automatically shift the position of the image area by the length of Ll,
The timing of exposure scanning by laser light or the start of feeding of the registration rollers is controlled.

Further, the stitching margin amount is adjusted by the stitching softness adjustment switch 438 as necessary.

Next, the direction of the recorded image is controlled in the same direction as described for the case where the input document is a one-sided document and paper binding is performed in the mode with no binding margin. For example, if the paper binding position is fixed downstream in the conveyance direction of the sheet and you want to create a left-bound image, exposure scanning is performed on the photoreceptor with a laser beam so that the recorded image becomes an erect image. (See Figure 14(a)). Also, if the paper binding position is variable, the direction of the recorded image can be controlled according to the binding position (
(See Figure 14(C)).

(B) When securing only the binding margin In this case, there is no need to consider the paper binding or hole punching positions. An erect image is recorded for the purpose of making it easier to check the image quality of the recorded image on the sheet or to determine whether or not it is necessary to adjust the binding margin.

(2) When the input document is a single-sided document with a binding margin In this case, there are two possibilities: the binding direction of the input document and the designated binding direction of the copy are the same or different.

First, a case will be described where the binding direction of the input document and the specified binding direction of the copy are the same. Figure 20 (a) shows images A and B recorded on the front and back sides of one sheet, and (b)
indicates that when the image area is formed on a sheet, the binding margin cannot be formed properly. In order to match the binding margins on the front and back sides of the sheet, move the position of image B corresponding to the back side by L2-LL (L2>Ll) opposite to the binding direction position of the input document, as shown in (C). Just move it to the side.

In addition, if the binding direction of the input original is different from the specified binding direction of the copy, the position of image A corresponding to the front surface of the sheet is
It is sufficient to shift the input document by 2-Ll to the side opposite to the binding direction position of the input document.

Regarding the direction of the recorded image, if the input document is one-sided,
As explained in the section about the mode with no binding margin, when binding or punching paper, it is sufficient to align the binding direction with the position of paper binding or punching. Record it with a statue.

(3) When the input document is a double-sided document with no binding margin. In this case, the positioning of the image area is the same as in the mode where the input document is a single-sided document with no binding margin, and the recorded image is , obtained from one double-sided original or two single-sided originals
The only difference is whether the image was obtained from a sheet, and the position and direction of the recorded image portion are determined in the same way.

(4) When the input document is a double-sided document with a binding margin (A) When the binding direction of the input document is the same as the specified binding direction of the copy When binding or punching, the binding or punching position In order to align the binding direction, the binding part 30 of the paper binding
7 or it is necessary to control the position of the punching section 322 of the punching device and the direction of the recorded images on both sides of the sheet. Figure 21 (a) shows a left-bound document with images A and H written on both sides, and (b) shows the positions of images A and B on the front and back sides of the input document. ing. (
C) is the recorded image desired by the operator, indicating that it is to be bound to the left, which is the same binding direction as the input document, and (
d) shows image areas A and B corresponding to the front and back sides of the sheet. Comparing (b) and (d), the image position of the input document and the image position of the recorded image area correspond, and there is no need to shift the position of the recorded image area in order to create a binding margin. I understand that. The same applies to right binding.

Also, the direction of the recorded image area on both sides of the recording sheet can be determined by determining the direction of the recorded image corresponding to the paper binding or punching position, as explained in the section on the mode where the input document is a single-sided document and there is no binding margin. good.

When binding or punching is not performed, the recorded image is output in an erect image.

(B) When the binding direction of the input document is different from the specified binding direction of the copy. In this case, when binding or punching, the paper binding or punching position must be aligned with the binding direction. It is necessary to control the position of the punching device and the direction of the recorded image on both sides of the sheet. FIG. 22(a) shows a left-bound document with images A and B written on both sides of the sheet, and FIG. 22(b) shows the positions of images A and 8 on the input document. (C) is the recorded image desired by the operator, indicating that it is to be bound on the right in a binding direction different from that of the input document, and (d) indicates image areas A and B corresponding to the front and back sides of the sheet. . (b) and (
Comparing d), the image position of the input document and the image position of the recorded image area are based on the opposing edges of the sheet, so it is difficult for the operator to create the desired binding margin. Recorded image areas A and B on the sheet are L2-
The timing of exposure scanning by laser light and/or feeding of the registration rollers is controlled so as to move the input document by an amount Ll (L2>Ll) in the direction opposite to the binding position of the input document.

Also, the direction of the recorded image on both sides of the sheet is determined by adjusting the direction of the recorded image in accordance with the position of the paper binding or punching device, as explained above in the section on the mode where the input document is a single-sided document and there is no binding margin. It is only necessary to decide, and if binding or punching is not performed, the recorded image will be output as an erect image.

Next, a mode in which two images are recorded only on one side of the sheet will be described.

This mode uses a large size sheet. The recording command in this recording mode will be explained with reference to FIG. 1O and FIG. 23. First, a read file number is input using the numeric keypad 400, and the read key 406 is pressed to search for the information position of the desired file number on the magneto-optical disk. Then, a "single-sided" switch 408 is pressed to specify single-sided recording. Since two images are to be arranged on one side, the arrangement number key "2" 414 is pressed. Then, the number of copies is set and the image density is set. If a binding margin is to be created on the sheet, the "binding margin creation acid" switch 430 is pressed. Also,
When paper processing such as paper folding, paper binding, and punching is required, paper processing switches 450 to 454 for specifying these are pressed.

By the way, when the paper folding switch 452 is pressed in this mode (step 91), a display appears indicating that the mode will be automatically switched to a mode in which one image is recorded on both sides of the sheet (step 92). That is, the lamps built in the single-sided switch 408 and the number switch "2" 414 of recorded images are turned off, and the lamps built in the double-sided switch 410 and the number switch "1" 412 of recorded images are turned on, respectively.

This forms two images on one side of a large size (A3 or B4) sheet, one for folded recordings and one for a small size (A4).
Or, with B5) recorded matter in which one image is formed on both sides of the sheet, even if the number of recorded images is two sheets, the thickness of the former recorded matter is twice the thickness of the latter. , since the recorded material is bulky (see Figure 24), if there is a paper folding command in this mode, pressing the print switch will
The mode is changed to record one image on each side of one sheet (step 93). Nevertheless, two images are recorded on one side of the sheet,
When it is desired to obtain a recorded material obtained by paper folding, the one-sided switch 408 or the recording image arrangement number switch "2" 414 is pressed.
When any one of the switches is pressed (step 93), the lamps of the double-sided switch 410 and the recording image arrangement number switch "1" 412, which were lit preferentially, are turned off. In this case, the built-in lamp of the paper folding switch 452 continues to be lit. In steps 94 and 95, it is determined whether recording of the designated number of copies has been completed.

Now, one of the points that must be taken into consideration in exposure scanning with laser light in a mode in which two images are recorded on one side of a sheet is that depending on whether the total number of files to be recorded is an odd number or an even number, the final page This concerns whether or not a margin is formed on the sheet on which the image is formed. When the total number of pages of the file to be recorded is Mo, if Mo is an odd number, one side of the sheet on which the image of Mo page is formed must be a blank space.

In a reversal development type laser beam printer, margins are formed by not performing exposure scanning with laser light.

Step 96 takes this into consideration, and steps 97 and 98 calculate the relationship between Ml and M2 when the pages of two images formed on one sheet are respectively Ml and M2 (Ml > M2). This is what is shown. When Mo is an odd number, the blank space formed on the sheet in pair with page Mo is expressed as page MO+1. A large size (A3 or B4) sheet is fed from the paper feed section (step 99).

Next, exposure scanning with a laser beam is performed, and a method will be described in which two images are arranged on one sheet of recording paper, that is, a method of forming two image portions on one side of a large-sized sheet.

First, before exposure scanning with laser light, two pages worth of images are read from the magneto-optical disk and page memory (D
mm is stored in RAM) 2B. Next page memory 28
One page of image information is read out from the image information, the photoreceptor drum 200 is exposed and scanned with a laser beam, and after the exposure scan is completed, the remaining one page of image information is exposed and scanned with a laser beam.

Figure 26 explains the case where the number of pages is 8, with pages 7 and 8 on the first sheet, pages 5 and 6 on the second sheet, and pages 5 and 6 on the third sheet. The images of pages 3 and 4 are recorded on the sheet, and the images of pages 1 and 2 are recorded on the fourth sheet.

Here, the horizontal arrangement of the two recorded images is determined by the control circuit 26 according to the binding direction, and the binding direction is designated by the binding direction designation switch 432.

For example, if a paper binding or punching device is placed downstream of the sheet conveyance path and you want to obtain left-bound recording sheets, the erect image M
The image part of page L is on the left, and page M2 of the erect image (M2 > Ml
) are juxtaposed to the right. In this case M
Exposure scanning with the laser light for pages 1 and 2 is carried out in the direction indicated by arrow A in FIG. 5(a). On the other hand, if you want to obtain a right-bound recording sheet, the image area of page M1 of the erect image should be on the right, and the image area of page M2 of the erect image should be on the right (M2 > Ml).
The images are juxtaposed on the left, and the paper binding or punching position and specified binding direction are aligned. The erect statue mentioned here is
If the top and bottom are reversed, it is natural that the Ml page will be juxtaposed to the right and the M2 page to the left when binding on the left, and the exposure scanning of the Ml page and the M2 page with the laser beam will be as shown in Figure 5 (a). The process is carried out in the direction shown by arrow B at . The steps from step 109 to step 114 have been explained above.

By the way, whether to place the images of M1 page and M2 page on either the left or right side of the sheet can be determined by using the binding direction designation switch 4.
32 (already mentioned above). When the exposure scanning by the laser beam is completed, development and fixing are performed, and the paper is discharged to the paper processing device (step 101-1).

By the way, in the mode in which two images are recorded on one or both sides of a sheet, there is a point to consider regarding the left and right arrangement of the two images on the sheet. Once exposure scanning has started, even if there is a command to change the left and right arrangement of the two images, that command is ignored.In this device, the command to change the left and right arrangement of the two images is ignored. teeth,
This is a binding direction designation switch 432. For example, the binding direction is specified as left binding, and after recording on the first sheet of recording paper is completed, the sheet binding direction is changed to right binding, and after the recording of the second sheet is completed, it is changed to left binding, If you change the binding to the right after the third sheet has been recorded, the left side of the first recording sheet should be 1 as shown in Figure 25.
Pages, 2 pages on the right side, 2nd recording sheet has 4 pages on the left side, 3 pages on the right side, 3rd recording sheet has 5 pages on the left side, 6 pages on the right side.
The fourth recording sheet has 8 pages on the left and 7 pages on the right, making it difficult to view the image because the binding direction changes for each sheet. Therefore, even if a command is issued to change the arrangement of left and right images after the recording operation for the first sheet is completed, the binding direction should not be changed until recording of all pages of at least one file is completed. is required. Specifically, this is achieved by controlling the control unit 26 to inhibit the input of the command once recording of the first sheet is completed, even if a binding direction designation change is input. The meaning of recording completion here will be explained. In other words, this means that the recording sheet is ejected outside the machine without jamming between the paper feed section and the ejection section. However, depending on the device, the next recording operation, such as charging, exposure, development, etc., is performed before the first sheet is ejected without jamming, and the grammar sheet is fed. It may also be fed from the paper section. In this case, 1
Since the recording operation for the second sheet is performed assuming that the first sheet does not jam, it is clear that the present invention can be applied to such a case as well.

More practically, this can be accomplished by prohibiting input of a command to change the binding direction even if the command is issued after the exposure scan for the first sheet is completed. Alternatively, even if a binding direction change command is issued after exposure scanning of the first image has started, this can be achieved by prohibiting input of that command. In this case, before feeding the first sheet from the registration rollers,
When a binding direction change command is issued, sheet feeding from the registration rollers is temporarily stopped, and in the next exposure process,
The first sheet is exposed and scanned in the changed binding direction, and the sheet is fed from the registration rollers at the timing when the leading edge of the image and the sheet coincide with the leading edge. When the left and right image positions are changed due to these paper binding direction change commands, there is no declaration 'r6++.
Cold l! The present invention can also be applied to a mode in which two images are recorded on each side of a sheet.

Step 101-2 and step 1ot-3 are steps indicating that paper folding is to be performed if there is a paper folding command.

In step 102, M+ and M2 are decremented by two in order to determine the pages of the two images to be formed on the next sheet. Step 103 indicates whether the M2 page is smaller than 1, that is, whether recording of the specified file is to be continued or has been completed (whether it is 1 page or not), and if it is necessary to continue recording, go to step 99. Return and once the recording is complete, proceed to the paper processing step.

Steps 104 to 108 indicate that if there is a command for paper binding or paper folding, the respective processes will be performed. If the number of pages of the specified file is 2 or less,
Even if there is a paper binding command, paper binding is not performed (step 105). This is because there is only one sheet, and there is no point in binding the paper.

The steps of the recording operation described above will be explained based on FIG. 26, taking as an example the case where the total number of pages is eight.

A total of 4 large size (A3) recording sheets are available in the paper feed section 202
~204. The first sheet has pages 7 and 8, the second sheet has pages 5 and 6, the third sheet has pages 3 and 4, and the fourth sheet has page 1. The image of the second page is recorded, and the first sheet is ejected to the paper processing device first.

If recording is performed in this order with the image area facing up, the sheet on which the first page is recorded will be at the top, and in addition to being able to view the sheet from above, when binding the sheets from above, , the holding part of the paper stitching needle is placed on the topmost sheet that is most likely to be folded when looking at it, i.e. 1
This will hold down the sheet on which the image of the page is recorded, which is effective in protecting the sheet.

Next, a mode in which two images are recorded on each side of the sheet will be explained. The recording command in this recording mode will be explained step by step with reference to FIG. First, a file number to be read is input using the numeric keypad 400, and the read key 406 is pressed to search for the location of the information of the file number desired from the magneto-optical disk. Then, a "double-sided" switch 410 is pressed to specify double-sided recording. Since two images are to be arranged on one side, the arrangement number key "2" 414 is pressed.

Then, the mode selection is made in the double-sided recording mode and the number of layouts is 2. It has already been explained that this mode has two aspects. (1) A mode in which the pages are aligned one page at a time when paper binding is performed on either the left or right side of the recording sheet (first mode); and (2) the paper binding is performed on either the left or right side of the recording sheet. This is a mode (second mode) in which the order of the pages is aligned when the page is turned one page at a time when the page is turned in the center.Selection of any of the above modes is made by branching under the switch 414 with the number of placements "2". The first mode is to select one of the two switches 41 on the left.
6. For the second mode, press the right switch 418.

Then, specify whether the recording paper size unified mode or the recording paper size mixed mode is selected. Unless otherwise specified, processing will be performed in the unified recording paper size mode, and the number of copies will be set.
If the image density is set and a binding margin is to be created on the recording sheet, the binding margin creation switch 430 is pressed. Also,
When paper processing such as paper folding, paper binding, and punching is required, press the paper processing switch that specifies these.

Next, the recording operation in this mode will be explained with reference to FIG. 23. In steps 115 and 116, it is determined whether recording of the set number of copies has been completed. Then, in step 117, it is determined whether the mode is the second mode or not. If the mode is the first mode, the process proceeds to step 119, and if the mode is the second mode, the process proceeds to step 118. In step 119, it is determined whether the mode is the size uniform mode or the mixed size mode. If the size uniform mode is selected, the process proceeds to step 122, and if the size mixed mode is selected, the process proceeds to step 123.

(A) First mode (1) Size uniform mode Step 122 indicates that a recording operation is performed in the size uniform mode, and this will be explained based on FIG. 27.

The size unification mode referred to herein means that sheets are fed so as to unify the sheets to a large size. In other words, paper transport within the recording apparatus and exposure scanning differ depending on the number of pages of the desired file. Here, a case of left binding will be explained.

In FIG. 27, the left side of the figure shows the page order of recorded sheets and the arrangement of each member, and the right side of the figure shows the sheets ejected from the recording device, the vertical relationship of the sheets in the intermediate tray, the page order, and Shows the movement of the sheet. In this case, it indicates that the lowest sheet has been ejected, indicating that the intermediate tray has been loaded from the lower side, and the sheets stacked at the upper level are fed first. The subscript written on the sheet represents the page. The content descriptions of (a), (b), and (c) are also commonly used in FIGS. 28, 29, and 30, which will be described later.

Here, a case where the number of sheets is three will be explained.

Since four images can be recorded on one sheet, including both front and back sides, the total number of pages in the file is Mo = 4K.

+1 to Mo=4. Mo=4 +2. +3 to MO=4. (
K=1゜2)・・・・・・・・・・・・・・・River) of 4
It can be expressed as a street.

First, if the total number of pages can be expressed as MO=4K,
The third and fourth pages are recorded on the third sheet and stacked on the intermediate tray 214. Pages 7 and 8 are recorded on the second sheet in this order and stacked on the first sheet of the intermediate tray 214. Pages 11 and 12 are recorded in this order on the third sheet, and stacked on the second sheet of the intermediate tray 214. Next, a third sheet is fed from the intermediate tray 214, and pages 9 and 10 are recorded on the front surface in that order. Similarly, the second sheet is fed from the intermediate tray 214, and pages 5 and 6 are recorded on the back side in that order, and then the first sheet is fed from the intermediate tray 220, and pages 1 and 2 are recorded on the back side. Recorded in page order.

When the total number of pages is represented by Mo=4 +1, the last page is recorded alone on one sheet. Considering the case where K=2, that is, the total number of pages is 9, the first sheet is ejected from the machine after the last page, 9 pages, is recorded. For the remaining images, the total number of pages is represented by Mo = 4K, and a recording operation is performed when K = 2.

When the total number of pages is represented by Mo=4 +2, only the last page and the previous page are recorded on one sheet. K=
2, that is, when the total number of pages is 10, pages 9 and 10 are recorded on the first sheet in that order, and then the sheets are directly ejected from the machine. For the remaining images, the total number of pages is represented by Mo = 4K, and a recording operation is performed when K = 2. Finally, the total number of pages is M
When expressed as o = 4K+3, the last page Mo
The Mo-1 page and the Mo-2 page are recorded on the back side of the sheet on which the Mo-1 page and the Mo-2 page are recorded. For the remaining images, Mo = 4
A recording operation in the case represented by K is performed. To explain this in the case where K=2, that is, the total number of pages is 11 pages, the images of pages 3 and 4 are recorded on the first sheet in this order, and the images are stacked in the intermediate tray. The images of pages 7 and 8 are recorded on the second sheet in this order, and stacked on the first sheet in the intermediate tray. Only 11 pages of images are recorded on the third sheet, and 2 pages in the intermediate tray are recorded.
It is stacked on the second sheet. Next, the third sheet is fed from the intermediate tray, and the images of pages 9 and 10 are recorded on the back side in this order. Thereafter, the second and first sheets are fed from the intermediate tray, and their images are recorded on their back surfaces in the order of pages 5 and 6, pages 1 and 2, respectively.

A flowchart showing the above recording operation is shown in FIG.
7) is shown.

Figure 33 shows a case where the total number of pages is 12 pages with Chichikun binding, but if the image area of each member was an erect image, the arrangement of pages formed on one sheet would be the same as in the case of left binding. If you compare them, you will see that they are the opposite. To align the specified binding direction with the paper binding or punching position, use the punching or paper binding device ■ If the specified binding direction is left binding, the downstream side of the sheet conveyance path for an upright image, or the downstream side of the sheet conveyance path for an inverted image. upstream side of the sheet conveyance path,
■If the designated binding direction is right binding, an upright image may be placed on the upstream side of the sheet conveyance path, and an inverted image may be placed on the downstream side of the sheet conveyance path. This can be easily understood from FIG.

(2) Size Mixing Mode Step 123 indicates that a recording operation is performed in the size mixing mode, which will be explained based on FIG. 28. The mixed size mode is a mode in which the size of the sheet to be recorded is selected according to the total number of pages of the read file, and the purpose is to obtain a recorded product with no or few blank pages. In this mode, the total number of pages Mo of the read file is
=4+1 (K=O.

1.2) or Mo=4+2 (K=0.1.2). Total number of pages of read file M
If o is +3 to Mo = 4 K and Mo = 4, then
Paper transport and exposure scanning are the same as in size uniform mode. In this mode, the total number of pages of the read file is Mo = 4 + 1
And when Mo=4 is represented by +2, the small size (A
4 or B5 size) sheets are used.

If the total number of pages of the read file is expressed as +1 to Mo=4, the last page is recorded only on one side of the small size sheet, and if it is expressed as +2 to Mo=4, the last page and the previous page are recorded on only one side of the small size sheet. Pages are recorded on both sides of the small size sheet. If the total number of pages is +1 to Mo=4, the case of K=2 is the 28th
To explain based on the figure, the first small-sized sheet is fed from paper feed units 202 to 204, and after the ninth page is recorded, it is discharged outside the machine.

The second and third large size sheets are in paper feed sections 202 to 20.
The relationship between the movement of the sheet and the pages to be recorded is the same as in the case where the total number of pages is Mo=4 and Mo=2.

In the case where the total number of pages is Mo=4+2, using an example of K=2, the first large-sized sheet is fed from the paper feed units 202 to 204, and pages 3 and 4 are recorded in that order. and stacked on the intermediate tray 214.

Next, a second large-sized sheet is fed, and after pages 7 and 8 are recorded in this order, they are stacked on top of the first sheet in the intermediate tray 214. Next, a small size sheet is fed from the paper feed section, and after 10 pages are recorded, the intermediate tray 2
It is stacked on the second sheet in 4. Next, the third sheet is fed from the intermediate tray 214, and after 9 pages are recorded on the back side, it is discharged outside the machine. Furthermore, a second large size sheet is fed from the intermediate tray 214 and pages 5 and 6 are printed on the back side.
The page is ejected from the machine where it was recorded. Similarly, pages 1 and 2 are recorded on the back side of the first sheet, and the sheet is ejected out of the machine.

The flowchart of the above recording operation is shown in Figure 23 (8).
This is shown below. The recording sheet that has been recorded in the unified size mode and the mixed size mode in steps 122 and 123, respectively, is processed in step 128.
If paper binding and hole punching are specified in steps 132 to 132, this indicates that these paper processes will be performed. After this step is completed, the process returns to step 115 and the recording operation is repeated as necessary. The relationship between the binding direction and the punching or paper binding position is the same as in the size uniform mode.

(B) Second mode If the second mode is determined in step 117, it is determined in step 118 whether it is the size uniform mode or size mixed mode, and if the size uniform mode is selected, the process proceeds to step 120, and if the size mixed mode is selected, the process proceeds to step 121. .

(1) Size uniformity mode Step 120 indicates that a recording operation is performed in the size uniformity mode, and this will be explained based on FIG. 29.

Even in this mode, paper transport within the recording apparatus and exposure scanning differ depending on the total number of pages of the desired file.

A case of three sheets with left binding will be explained. First, the total number of pages is Mo=4K (K=1゜2)...
), that is, when =3 will be explained as an example. Pages 2 and 11 are recorded in this order on the first sheet, and the sheets are stacked in the intermediate tray.

On the second sheet, pages 4 and 9 are recorded in that order.
It is stacked on the first sheet in the intermediate tray.

On the third sheet, pages 6 and 7 are recorded in order,
It is stacked on top of the second sheet in the intermediate tray. Next, the third sheet is fed from the intermediate tray, images of pages 8 and 5 are recorded on the back side, and the sheet is discharged outside the machine. Similarly, images of pages 10 and 3 are recorded on the back side of the second sheet, and images of page 12 and 1 are recorded on the back side of the first sheet.

Next, the total number of pages is Mo = 4 K + 1 (K = O
, l, 2, -------...), that is, when =2 will be explained as an example. Only two pages of images are recorded on the first sheet, and the other one page is stacked on the intermediate tray 214 as a blank area. Furthermore, the third one is 6
Images are recorded in the order of page and page 7, and stacked on the second sheet in the intermediate tray 214. Next, intermediate tray 2
The third sheet from No. 14 is fed, images are recorded on the back side of pages 8 and 5 in this order, and the sheets are discharged outside the machine. Furthermore, a second sheet is fed from the intermediate tray 214, and one page is exposed and scanned on its back side, and page 3 is recorded on the front and back sides of page 4, and the other page is recorded. It becomes a blank space and is ejected from the machine. Similarly, the first sheet is fed from the intermediate tray, and the first page is recorded on the back side of the sheet in the same position as page 2, and the other page is left blank and is ejected from the machine. .

Next, a case where the total number of pages is Mo=4+2 will be explained.

The pages recorded on the back surfaces of the first, second, and third sheets and their order are the same as in the case where Mo=4+1. Also, the pages recorded on the back sides of the third and first sheets fed from the intermediate tray and their order are also Mo=
This is similar to the case of +1 to 4. The difference is that images of 10 pages and 3 pages are recorded on the back side of the second sheet fed from the intermediate tray.

Finally, the case where the total number of pages is Mo = 4K + 3 will be explained.

The pages recorded on the surfaces of the first, second, and third sheets and their order are the same as in the case of Mo=4K. Also, the pages recorded on the back side of the second and first sheets fed from the intermediate tray and their order are Mo.
This is the same as in the case of = 4K + 2. The difference is that on the back side of the first sheet fed from the intermediate tray, there is a
The page is recorded on the front and back sides of the second page, and the other page is left blank. In this size standardization mode, paper folding is performed as necessary, and the direction is the direction shown in FIG. The page order is controlled so that the pages are in the same order.

(2) Size Mixing Mode Step 121 indicates that a recording operation is performed in the size mixing mode, which will be explained based on FIG. 30. Even in this mode, the paper conveyance and exposure scanning within the recording apparatus differ depending on the total number of pages of the file sought. Here, the case of left binding will be explained.

In this mixed size mode, the total number of pages is Mo=4.
When Mo=4 and Mo=3, both paper transport and exposure scanning are the same as in the size uniform mode.

The case where the total number of pages is Mo=4+1 will be explained. A small size sheet is fed as the first sheet, 9 pages of images are recorded, and is ejected from the machine, passing through without performing any paper folding operation, regardless of the presence or absence of a paper folding command. The 2nd and 3rd sheets are large-sized sheets, and images of 2 pages, 7 pages, 4 pages, and 5 pages are recorded, respectively, and are loaded into the intermediate tray with the 2nd sheet facing down. be done. Next, 3 from the middle tray
The 6th sheet is fed, images of pages 6 and 3 are recorded on the back side, and the sheet is ejected from the machine. Finally, the second sheet is fed from the intermediate tray, images of 8 pages and 1 page are recorded on the back side, and the sheet is discharged outside the machine.

Next, a case where the total number of pages is Mo=4+2 will be explained.

The difference from the case where Mo=4+1 is that in order to record not only the front side of the small size sheet but also the back side, it is necessary to store it in an intermediate tray and refeed it.

The first sheet is a large size sheet, and pages 2 and 7 are fed.
Images are recorded in page order and stored in the intermediate tray.

The second sheet is also large in size, and images are recorded in the order of pages 4 and 5, and are stacked on top of the first sheet in the intermediate tray. The third sheet is small size (A4),
After 10 pages of images are recorded, they are stacked on the second sheet in the intermediate tray.

Next, the third sheet is fed from the intermediate tray, 9 pages of images are recorded on the back side, and is ejected from the machine, passing through without performing any paper folding operation, regardless of whether or not there is a paper folding command. 2 more
The second sheet is fed from the intermediate tray, and 6 pages are printed on the back side.
Images are recorded in the order of 3 pages and ejected outside the machine. Finally, images are recorded on the back side of the first sheet in the order of page 8 and page 1. The center of the first and second large-sized sheets is folded as necessary, but the direction is the direction shown in Figure 8, and the paper folding direction and the pages formed on the sheets are The relationship between the two pages is controlled so that the order of the pages is the same when the pages are turned over one page at a time. and steps 124-12
If paper binding and hole punching are specified in 7,
Process those papers. After this step is completed, the process returns to step 115 again, and if necessary, performs a recording operation (Soonko ^) When performing paper binding in this 2 mode, mainly changes the order of exposure scanning of each person. There are times when you have to.

This is the case when the total number of pages of the called file exceeds the capacity of the paper binding device. As will be explained based on FIG. 31, the paper binding capacity of the paper binding device is assumed to be four sheets.

An example in which the total number of pages is 16 will be explained. Figure 31(a) shows the relationship between the pages of the sheet when the capacity of the paper binding device is sufficient compared to the total number of pages (that is, 16 pages can be bound at once). Figure (b) shows the relationship between the page order of the front and back pages when each sheet is developed.

Fig. 31 (C) shows that the paper binding capacity of the paper binding device is 4 sheets, but the sheet containing 16 pages of images cannot be bound at once, and the number of pages on the sheet is divided into two parts. FIG. 31(d) shows the relationship between the front and back pages of each sheet when it is developed. As is clear from a comparison of FIGS. 31(b) and 31(d), the number of pages formed on one front and back sheet is different, and this is due to exposure to laser light. It can be seen that it is necessary to control scanning according to the binding capacity and the total number of pages. For example, consider a sheet on which the first page is recorded.

Comparing FIGS. 31(b) and 31(d), it can be seen that the pages recorded on the front and back sides of each sheet are different. We will specifically explain how to control the page order. Let the total number of pages be Mo pages, and the paper binding capacity of the paper binding device be KN sheets. When a sheet is folded in half, the paper is bound at the paper folding position, that is, at a location slightly shifted from the center. One sheet is bound at two locations using one paper stitching needle, so When a filter paper binding device with a paper binding capacity of KN sheets uses large size sheets, it is expressed as an integer value of KN/2 (this is assumed to be N2 sheets).

Then, the number NN of sheets required to record all pages can be expressed as an integer value of (Mo+3)/4. From this, when binding sheets on which images of all pages are recorded, the number of times KK of paper binding is an integer value of -:+1.

As described above, images of all pages exceeding the paper binding capacity of the paper binding device are divided into one or more bundles of sheets, and the bundle of sheets existing on the first page is placed on the paper output tray, and the last page is placed on the upper side. When Mo pages are stacked on the bottom side, the target pages of each sheet bundle are as follows.

The target of the first paper binding is from (KK-1)x4xN2+1 page The target of the second paper binding of Mo page is from (KK-2)x4xN2+1 page (KK-1)x4
x N2 pages K explain. In step 1, the recording operation and paper binding are performed for the pages to be bound for the first time, that is, from page (KK-1)X4XN2+1 to page Mo.

Details regarding specific sheet movements and page order have already been explained and will therefore be omitted.

In step 2, since paper binding has already been performed once in step 1 above, in order to control the remaining number of paper bindings,
The value of KK is subtracted by one, and in step 3, if the number of paper bindings KK subtracted in step 2 is KK<0, it is set as END,
If K K > O, the process proceeds to step 4 in order to perform the recording operation and paper binding the required number of times.

Step 4 is 4 x (K K -t) x N 2
When the recording operation and paper binding are completed from +1 page to 4 x KK x N2 pages, the process returns to step 2.

[Effects] As explained above, according to the present invention, wasteful use of recording materials can be prevented, and bookbinding becomes very convenient.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a system to which the present invention can be applied, FIG. 2 is a perspective view showing the configuration of a magneto-optical disk device, and FIG. 3 (1) is a sectional view showing the configuration of a recording device and a reading device. , FIG. 3(2) is a sectional view showing the configuration of the reading device,
FIG. 4 is a diagram showing the operation unit for image reading, FIG. 5 is a diagram showing the relationship between the image formed on the sheet and the drum, FIG. 6 is a diagram showing the input/output of DRAM, and FIG. 7 is a diagram showing the paper FIG. 8 is a diagram showing the configuration of the binding device; FIG. 9 is a diagram showing the configuration of the paper folding device;
Figure 10 shows the configuration of the punching device, Figure 10 shows the operation unit for recording images, and Figure 11 shows the pages when two images are recorded on both sides of one sheet. (a) shows left binding, and (b) shows center binding. 1st
Figures 2 (1) to (5) are flowcharts showing the operation of the small size recording mode, Figure 13 is a diagram showing a sheet with paper binding and punching, and Figure 14 is a diagram showing the image formed on the sheet and drum, and the paper. Fig. 15 is a diagram showing the relationship between binding devices; Fig. 15 is a diagram showing the relationship between binding margin positions for left-stitched and right-stitched sheets;
The figure shows the relationship between the binding margin positions of left-bound originals and recorded images, Figure 17 shows the relationship between the binding margin positions of right-bound originals and recorded images, and Figure 18 shows the relationship between the binding margin positions of left-bound originals and recorded images. Figure 18 shows the relationship between the binding margin positions of left-bound originals and recorded images. Figure 19 shows the relationship between the binding margin positions of a single-sided original without a binding margin and a recorded image, and Figure 20 shows the binding/margin positions of a single-sided original with a binding margin and a recorded image. Figure 21 shows the case where the binding margin position of the double-sided original and the binding margin position of the recorded image are the same, and Figure 22 shows the case where the binding margin position of the double-sided original and the binding margin position of the recorded image are different. Figures 23 (1) to (9) are flowcharts showing the operation of the large size recording mode, and Figure 24 (a) is a diagram showing the situation when two images are recorded on one side of a large size sheet. Figure 2(b) shows one image on both sides of a small size sheet, Figures 25 and 26 show pages when two images are recorded on one side of a large size sheet, and Figure 2
7 is a diagram showing the pages of recorded images in the size uniform mode in the first mode, FIG. 28 is a diagram showing the pages of recorded images in the size mixed mode in the first mode, and FIG. Figure 30 is a diagram showing pages of recorded images in size uniform mode in 2 modes.
Figure 31 is a diagram showing the pages of recorded images in the mixed size mode, Figure 31 is a diagram showing the pages of recorded images depending on the paper binding capacity, and Figure 32 is when dividing recorded images into multiple bundles. Flowchart showing the operation of
FIG. 3 is a diagram showing pages of recorded images in the first mode of right binding. In addition, 12 is a magneto-optical disk device, 14 is a recording device, 1
6 is a paper folding device, 18 is a paper binding device, 20 is a punching device, 26 is a control circuit, 28 is a DRAM, 202 to 204 are paper feed units, 214 is an intermediate tray, 408 is a single-sided mode selection key, 410 is a duplex mode selection keys, 412 and 414
416 is the first mode selection key; 418 is the second mode selection key; 420 is the size uniformity mode selection key;
22 is a size mixing mode selection key, and 432 is a binding direction selection key. Mo/7m ('D) 30? Figure 8 (U). (b) (C) , iztb Fig./f Fig. 1e (α) (b) (α) (b) (C) L, 12 No. 23 Embankment (4) Fig. 24 (α) (b) No. 25 Figure no=, t bar warm (Q) (b') dL-f engineering Cd) (α), b)

Claims (3)

[Claims] (1) A file means for storing image information, a means for forming an image on a recording material from the image information read from the file means, a first mode for forming an image on one side of the recording material, and a first mode for forming an image on both sides of the recording material. a second mode for image formation; and means for specifying the number of images to be formed on one side of the recording material, and when a predetermined number is specified by the specifying means in the first mode, the second mode An image forming apparatus characterized in that the mode is prioritized. (2) The image forming apparatus according to claim 1, wherein when giving priority to the second mode, the predetermined number of images are distributed and formed on both sides of the recording material. (3) The image forming apparatus according to claim 1, wherein when giving priority to the second mode, a small-sized recording material is selected.