JPH0456875A - Both side copying device - Google Patents

Abstract

PURPOSE:To obtain transferred paper with the same constitution of pages as an original from a double spread state of a book state original by providing a specified two recordings control means. CONSTITUTION:Feeding of a recording sheet of a second type is specified to a recording sheet feeding means 130 during a preceding exposure, a back cover original which is the backside of the second type recording sheet and a half of that side is recorded, the other half of the double spread original of a page immediately before a back cover and one half of the double spread original of the page immediately before this double spread original is recorded on the backside of a first type recording sheet, fed by the recording sheet feeding means by specification during the preceding exposure among the exposures of the above by the two recordings control means. The recording sheet with the recording carried out on it is reversed by a recording sheet reversing means 140. Thus, when the transferred paper obtained is stapled, the same thing as the book state original which is the base of the double spread original can be formed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image forming apparatus having a function of double-sided copying a double-sided document onto transfer paper, and in particular, in addition to the double-sided copying function, a separate type of recording sheet for the back cover is used. The present invention also relates to a double-sided copying apparatus having a cover recording mode for selectively copying.

[Conventional technology]

In general, double-sided copying devices have a single-sided copy mode that copies a single-sided original or a double-sided original onto both sides of recording paper, a single-sided → double-sided mode that copies a single-sided original onto both sides of recording paper, and a double-sided copy mode that copies a double-sided original onto both sides of recording paper. There is a double-sided → double-sided mode for copying from a double-page spread document to both sides of recording paper, and a double-sided → double-sided mode for copying from a double-page spread document to both sides of a recording sheet.

[Problem to be solved by the invention]

However, in double-sided copying mode, when copying a double-sided document obtained from a book-like document on both sides of transfer paper, the first side (left half) of the double-sided document is copied onto the front side of the transfer paper. Then, the second side (right half) of the two-page spread document was copied onto the back side of the transfer paper. For this reason, when the copied transfer paper is bound to form a book, the resulting book is one page misaligned with the original book original.

Also, when forming the front and back covers, the cover is half the area of the double-page spread, and when copying from double-sided to double-sided, one side of the transfer paper will be blank (or black in some cases). When the transfer paper is configured into a book shape, a blank sheet is inserted between the transfer sheets, and the continuity of images on two-page spreads is lost when the transfer paper is configured into a book shape, as described above.

Furthermore, space on one side of the front and back covers is wasted.

An object of the present invention is to obtain a transfer paper from a double-page spread by using the same beige structure as the original and adding a front cover and a back cover when copying a document obtained from a double-page spread of a book-like manuscript onto a transfer paper. shall be.

[Means to solve the problem]

The double-sided copying apparatus of the present invention includes image forming means (110, 120) for recording an exposed image on a recording sheet supplied to an image forming position [(111); Recording sheet supplying means (130) that selectively supplies one of the seed recording sheets to the copy image forming means (110, 120); Turn over the recording sheet on which one side of the recording sheet has been recorded and move it to the image forming position (111) Recording sticker reversing means (140) for feeding the recording sheet and ejecting the recording sheet on which images have been recorded on both sides out of the apparatus; input means (27) for specifying the back cover; when the back cover is specified;
Supplying the second type of recording sheet to the recording sheet supply means (130) during the preceding exposure of the back cover original exposure and the exposure of the half of the double-page spread document immediately before the back cover of the page immediately before the back cover. , record the back cover original and the half side on the front and back sides of the second type recording sheet, and the other half of the double-page spread document on the page immediately before the back cover, and the half side of the double-page spread document on the page immediately before this double-page document, Surface recording control means (
400) ;

Note that the symbols in parentheses are corresponding elements in the embodiment described later.

[Effect]

According to this, when the back cover is specified, the surface recording control means (400) performs exposure of the back cover document and the half of the double-page spread document immediately before the back cover, which is the page immediately before the back cover. Recording sheet supply means (130) during the preceding exposure
Specify the supply of the second type of recording sheet, record the front and back sides of the second type of recording sheet 1-; Half of the two-page spread document, which is the immediately preceding page of the two-page spread document, is recorded on both front and back surfaces by specifying the first type of recording sheet to be supplied to the recording sheet supply means during the preceding exposure among those exposures.

As a result, the recording sheet supply means (130) performs the second type of exposure during the preceding exposure of the back cover original and the exposure of the half of the double-page spread document immediately before the back cover. Supply recording sheets. Further, the other half of the double-page spread document, which is the page immediately before the back cover, and the half surface of the double-page spread document, which is the page immediately before this double-page document, are fed with the first type of recording sheet during the preceding exposure of these exposures.

The copy image forming means (110, ]20) has an exposure position [(1
11) The surface of the original sent to the printer is exposed to light and the image is recorded on the supplied recording paper sheet.

Further, the recording sheet reversing means (140) reverses the recording sheet on which recording has been performed. Recording is performed on the back side by the next exposure, and then the recording sheet is discharged from the apparatus.

That is, the inversion or ejection of the sheets 1- recorded for each exposure is alternately repeated.

Therefore, for a back cover document, a second type of recording sheet (cover sheet) is used for the back cover, and half of the two-page spread document, which is the page immediately before the back cover, is recorded on the back side. As for the other recording sheets, half of each two-page spread document is recorded on the front and back sides of the first type recording sheet (plain paper), respectively.

When the obtained transfer papers are bound in this way, it is possible to form a document similar to a book-like document which is the basis of a double-page document. Therefore, image information such as characters spread across the double-page spread is not lost, and since the copy is made on the back side of the back cover, transfer paper can be saved.

Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.

〔Example〕

First, the copying apparatus main body 100 will be explained with reference to FIG.

This main body 100 is an electrostatic transfer type copying device that fixes originals, and includes an optical system 1102, an image forming system 120, and so on. It consists of a paper feed system 130, a paper refeed system 140, and the like.

The optical system 110 includes a contact glass 111 and an exposure lamp 112 disposed below the contact glass 111. 1st mirror 1131+
Second mirror 1132 + third mirror 1133. The image forming system 120 includes a fourth mirror 1134 + a fifth mirror 1135, a lens 114, a dustproof glass 115, etc., and includes a photosensitive drum 121, a charger 122 disposed around it, an eraser 123, and the like. Developer I24. Pre-transfer static elimination lamp (hereinafter referred to as PTL) 125. Transfer charger 126° Separation charger 1272 Separation claw 128
．． Static neutralization charger before cleaning (hereinafter referred to as FCC)
129, a cleaner 12A, a transport bell 1-12B disposed downstream of the photosensitive drum 121, a fixing device 12C, and the like.

The paper feed system 130 has five stages, including a manual paper feed tray 1310 + a first paper feed tray 1311. Second paper feed tray 1312 *Calls provided for the third paper feed tray 1313, fourth paper feed tray 1314, and each paper feed tray (however, the manual feed tray 131o is shared with the first paper feed tray 1311) Coro132. , 132°, 1
323° 1324, paper feed roller 1331 y 1332
+ 1.33j# 1334 + and reverse roller 1
34. , 134□, 1343.1344.

and registration roller 135. It consists of a guide mylar 136 and various guides and intermediate rollers. In this embodiment, recording sheets for the cover are stacked on the fourth paper feed tray 1314.

The paper refeeding system 140 is operated by a switching claw I41. Approaching/separating roller 142° reversing guide 1.13. Reversing roller 144. Gate claw 14
5° intermediate tray 146. Tip roller 147. Paper stopper 148. Call Koro 149. It consists of a paper feed roller 14A, a reverse rotation roller 14B, a paper discharge roller 14C, and the like.

RDH20 installed on contact glass 111
0 (details will be described later), the copy process starts when the original is set on the contact glass 111, the paper feed clutch is turned on, and the call roller of the paper feed tray selected at that time picks up the recording paper. Send it to the paper feed roller.

Since the paper feed roller rotates in the direction in which the recording paper is fed, and the reverse roller rotates in the opposite direction, double feeding is prevented and only the topmost recording paper is sent toward the registration rollers 135.

During this time, the optical system 110 scans the document on the contact glass 111 and passes the reflected light from the document illuminated by the exposure lamp 112 to the first mirror 1131 + second mirror 1132 to the third mirror 113 . , lens 114. 4th mirror 11
34.

The light is guided to the photosensitive surface of the photosensitive drum 121 via the fifth mirror 1135 and the dustproof glass 115.

The photosensitive drum 121 rotates clockwise in the drawing, and its photosensitive surface is uniformly charged by the charging charger 122 before being irradiated with the original reflected light from the optical system 110.
A latent image area is formed by static electricity removal by the eraser 123. Therefore, when this latent image area is irradiated with light reflected from the original, photoconduction occurs depending on the strength of the light, and an electrostatic latent image is formed.

This electrostatic latent image is developed by a developing device 124.

A toner image is created in which toner is layered according to the density of the document.

This toner image is transferred to the recording paper fed out from the registration roller 135, but in order to facilitate the transfer, -FT
Electric charge is removed by L125 before transfer.

The recording paper fed out by the registration roller 135 is brought into close contact with the photosensitive surface of the photosensitive drum 121 by a guide mylar 136, and the toner image is transferred directly above the transfer charger 126. Immediately after this, the recording paper is separated from the photosensitive surface by the separation charger 127, but if the separation is insufficient at this time,
They are forcibly separated by the separation claw 128.

After the recording paper is separated, residual 1-ner is removed from the photosensitive surface of the photosensitive drum 121 by a cleaner 12.4, and the recording paper is sent to the fixing device 12C by the conveyor belt 12B.

The fixing device 1.2C includes a fixing roller 12C1 and a pressure roller 12C2, and heats the recording paper onto which the toner image has been transferred while applying pressure (approximately 185° C.) to fix the toner image.

The recording paper on which the toner image has been fixed is delivered to a paper refeed system 140. The paper refeeding system 140 normally guides the recording paper to the paper discharge roller 14C by the action of the switching claw 141, but guides the recording paper to the reversing guide 143 at an arbitrary timing in the duplex mode. After that, when the trailing edge of the recording paper passes the switching pawl 141, the switching pawl 141 switches, the contact/separation roller 142 comes into contact, and the recording paper is sent to the reversing roller 144, and the reversing roller 1
44 is sent to the gate claw 145.

There are four gate claws 145, and when the gate claws corresponding to the size of the recording paper are opened, the recording paper is ejected to the intermediate tray 146. The recording paper that has fallen onto the intermediate tray 146 is brought together by a leading edge shifting roller 147 until it comes into contact with a paper stopper 148, and its leading edge is aligned and stocked.

The recording paper that has been threaded onto the intermediate 1-ray 14G is transferred to the recall roller 149 at the start of any copy in duplex mode.
The paper is sent to the paper feed roller LEA by the paper feed roller 14A and the reversing roller 14B, and the uppermost sheet is sent to the registration 1 roller 135.

Note that when detecting the toner concentration of the developing device 124, prior to forming a toner image of the document, a toner image of a standard pattern is formed on the front side of the contact glass 111,
A P sensor PSN provided downstream of the developing device 124 detects the density.
Read by.

Figure 3a shows the operation and display board 15 provided in this copying machine.
0 appearance is shown. Each key and display will be explained.

Timer key 1: Used when setting the timer time.

Timer display 2: If a timer is set, it lights up when the timer is operating.

Program key 3 Used to store and recall programs.

Program display 4D Lights up when a program is in use.

Enter key 5 = Used when changing dimensions, editing functions, and setting program numbers.

Numeric keypad 6: Used when setting the number of copies, when setting the size/magnification, when setting the binding bar width, when setting the program, and when setting the program number.

Guidance key 7: Used when you want to display the operation method and operation explanation of each key on the guidance display section.

Guidance display 8: Lights up when using guidance.

Display panel 9: Display various information (described later).

Dimension scaling key lO: Used when entering the dimensions of the original.

Dimension magnification display 11: Lights up when dimension scaling is selected.

Centering key 12: Used when you want to move the copy image to the center of the paper.

Centering display 13: Lights up when centering is selected.

Binding margin adjustment key 14: Used when you want to create binding margins (margins) on the left and right sides of the copy.

Binding margin display 15: Display the selected binding margin.

Sorter key 19: Press when using the sorter.

Stack display 21d Lights up when stuck.

Sort display 22: Lights up when the sorter is in use and is in sorting mode.

Same side key 23: Used when making double-sided copies.

Double-sided display 24: Lights up when double-sided copying is in progress.

Page continuous copying key 25: Used when automatically copying a review manuscript one side at a time and when automatically copying a double-sided manuscript one side at a time.

Page continuous shooting display 26: Lights up when continuous page shooting is in progress.

Cover key 27: Used to select front cover/front/back cover mode.

Cover display 28: Lights up when in front cover/front and back cover mode.

Paper specification scaling key 29: Used when making paper-specific variable size copies.

Paper specification variable magnification display 30: Lights up during paper size variable copying.

Zoom magnification key 31: Used when freely selecting the copy magnification.

Reduce key 32: Used when making a reduced copy.

Enlarge key 33: Used when making enlarged copies.

Same size key 34: Used when reverting to a same size copy.

Paper selection key 35: Used when selecting copy paper.

Automatic paper selection key 36: Used when automatic paper selection is enabled.

Density adjustment key 37: Used when setting the density of a copy image to: Am.

Automatic density key 38: Use this when you want to automatically adjust the density.

Clear/stop key 39 = Used when changing the set number of copies, stopping continuous copying midway, or setting the program number.

Start key 40: Used when making copies.

Interrupt key 41: Used when making an interrupt copy.

Mode clear/preheating key 42: Used when returning various modes to standard mode, switching between preheating state and normal state, and setting program number.

Preheating display 43: Lights up during preheating.

Next, the contents of the display panel 9 will be explained with reference to FIG. 3b.

Call service man display 51: Lights up along with the guidance display section when treatment by a service engineer is required.

Manual feed display 52: Lights up when paper is not set in manual feed mode.

Running display 53: Indicates that a copy operation is in progress.

Copy permission display 54 lights up when copying is possible by pressing the NISTER 1 key 40.

Standby display 55: Lights up when the device is in standby mode.

Paper supply display 56: Lights up when there is no paper in the cassette.

Misfeed display 57: Lights up when paper misfeeds (paper jam).

Toner supply display 59: It blinks when the toner is low, and lights up when it runs out.

Paper remaining amount display 60: Indicates the amount of paper remaining in the cassette.

Paper direction display 61: Displays the direction of paper loaded in the cassette.

Paper size display 62: Displays the size of paper loaded in the cassette.

Paper selection display 63: Paper is fed from the lit cassette.

Automatic paper selection state 64: Lights up when automatic paper selection is in progress.

Paper specification variable magnification display 65: Lights up when the paper size is changed.

Magnification display 66: The copy magnification will be displayed.

Actual size display 67: Lights up when the copying magnification is 1x.

Zoom magnification display 68: Lights up when zooming is in progress.

Misfeed position display 69: Misfeed location! (A-G) light up at the same time as the misfit display.

Density adjustment display 70: Displays the degree of shading of the copied image during manual density adjustment.

Automatic concentration display 71: Lights up when automatically adjusting the density of a copied image.

Copy number counter 72: The number of copies being copied is displayed.

Set sheet number counter 73: The number of sheets set using the numeric keypad will be displayed.

FIG. 4 shows a cross section of the structure of the RD H200. The RDH 200 will be explained with reference to this figure.

The RD H200 is a type of automatic source WII feeding device that automatically feeds the document onto the contact glass 111 before starting optical scanning and discharges it after the optical scanning is completed.

By resetting the ejected original at the end (top in this example), it is possible to repeatedly feed and eject the same original.
This is intended to facilitate copying of WJig drafts, rereading in case of misfeeds, and copying.

This device has 2 document placement tables 0. It consists of a document feeding system 220°, a document resetting system 230, a reversing system 240, and the like.

A recycle lever drive motor 21 is mounted on the original table 210.
1. A recycle lever 212 coupled to the shaft and a sensor 2i3 for detecting rotation of the recycle lever 212 are provided. When a document is sent and copy start is instructed, the motor 211 rotates the recycle lever 212 to place the final document on top. Thereafter, when the final document is fed and the lever 212 rotates due to its own weight, the sensor 213 detects the lever 212 just before the tip falls from the notch formed in the document mounting table 210. In other words, the sensor 213 detects one cycle of the series of originals placed at the beginning. Further, when the number of document feeding cycles is two or more, each cycle is detected by placing the lever 212 on the final document when it is reset at the end.

The feeding system 220 includes a half-moon roller 22I and a feeding belt 222.
゜Separation belt 223. Conveyance roller 224. Conveyor belt 2
25 and presser roller 226. and document sensor 227
．． Paper feed sensor 228 and paper feed registration sensor 229
Equipped with etc.

When the document sensor 227 detects a document, a feed-in signal is sent from the main body 100 at a predetermined timing. This starts the document feeding operation, and first, the half-moon roller 221 separates the document. Since a plurality of these documents may overlap, only the lowest document is sent to the conveyance roller 224 by the action of the feed belt 222 and separation belt 223.

Conveyance roller 224 passes this document to conveyance belt 225, which further conveys it. At this time, when the registration sensor 229 detects the trailing edge of the document, a predetermined stop timing is set and the feeding of the document is stopped. As a result, the original is positioned on the contact glass 111. Note that the paper feed sensor 228 detects misfeed in this case.

The resetting system 230 includes a direction changing plate 231. Ejection roller 232
Equipped with ゜233 and 234 etc.

Resetting is performed upon completion of optical scanning, and the direction change plate 23
After selecting the discharge guide 235 by 1, the conveyor belt 2
Reverse 25. As a result, the original is transferred to the ejection roller 232.
．． The document is discharged via 233 and 234 to the last (top) document on the document table.

The reversing system 240 includes switchback rollers 241 . The reversal sensor 2429 is made up of the reversal registration sensor 243, the original feeding thread 220, and a part of the original resetting system 230.

Here, in ejecting by the document resetting system 230,
A reversal sensor 242 detects the point in time when the trailing edge of the document passes the discharge guide 235, and the document is guided to the switchback roller 241 by reversing the discharge rollers 232, 233, and 234. The switch roller 241 guides the document to the reversal guide 244 and then reverses it and guides it to the reversal paper feed guide 245 . At this time, the reversing paper feed guide 245 is selected by the direction change plate 231 and the document is sent to the conveyor belt 225. In this case, the original stop timing is determined by the detection by the reversal registration sensor 243. The original feeding system 220 described above. Depending on the operation of the original resetting system 230 and the reversing system 240, the original is normally fed and ejected normally ("positive feed positive pressure ejection"), and the original is reversed, fed, and ejected as is. 1 ``Normal feeding mode'', which feeds the i-document normally, reverses it, and then ejects it.
A ``reverse mode'' in which the document is fed inverted and then discharged in reverse, and a ``reversal mode'' in which only the document is simply inverted are possible.

Further, the second RDH200 has an "original return mode" for returning the original. This is a mode in which the original is returned to the previous original when a copy cannot be made due to a jam or the like or when a defective copy occurs for some reason. Here, the number of originals that have been copied is counted, so the originals are fed and ejected until the cycle ends, and then the originals are fed and ejected repeatedly for the number of sheets subtracted from the count value. Place the original. In this case, after one round, the number of returned sheets may be larger than the count value, but the subtraction is done modulo the total number of original sheets. Further, in this embodiment, the number of returned sheets is limited to seven.

The components described above are controlled by an electrical control system shown in FIG. This electrical control system includes a main control section 400
The storage unit 410. Optical control section 420°AC control section 430. It consists of an operation control section 440, an RDH control section 450, and the like.

The main control unit 400 monitors various sensors 420 provided in each part of the main body 100 and controls the loads of the solenoids, motors, etc. of each part.

The optical control unit 420 controls the lens motor that drives the lens 114 and the scanner motor that performs optical scanning, and the AC control unit 430 controls the exposure lamp 112 and the fixing device 12.
c heater, main motor, developing motor.

Controls AC loads such as the transport motor and paper feed motor.

The operation control unit 440 reads key operations on the operation and display board 150 and controls the display.

The RDH control unit 450 controls the RDH 200.

Serial data transmission is performed between the RDH control section 450 and the main control section 400 via optical fibers 451 and 452 by an interface circuit as shown in FIG. 6a.

Data sent from the main control section 400 to the RDH control section 450 is represented by four addresses as shown in FIG. 6b, and the meaning of each signal is as follows.

Operation mode code: (bit6.bit5.bit4
) (000): Forward feed, normal discharge mode (001): Conjunction/reverse exclusion mode (01,0): Forward supply/reverse discharge mode (011): Conjunction/reverse wandering mode (ioo): Reverse mode (+01) Knee sheet forward feeding and forward ejection mode (110): Original return mode (111): Count mode FEED OUT: Start of wandering paper operation FEED N: Start of paper feeding operation (each operation mode) Preheating mode: Original insertion display OFF Interrupt mode: Turn on interrupt mode and save the document counter.
Auto clear to restore the document counter that was evacuated when the interrupt mode is OFF: Clear the mode and initialize the document by repeatedly discharging the paper when the recycle lever is not down Orientation code: Inch system or AB system when g document is detected Original counter clear: Clear the original counter Number of returned originals: Number of returned originals when returning originals Also, the RDH control unit 45
The data sent from 0 to the main control unit 400 is
As shown in the figure, there are four addresses, and the meaning of each signal is as follows.

Feed OUT jam: Jam feed I when document is ejected
N jam: Jam during document feeding (same as in document return mode, etc.) Lift UP: Indicates that RDH is open. Paper feeding start OK = Recording paper is allowed to feed due to completion of document positioning. Document detection : The original is on the document table. Original separation: Indicates that the recycle lever is down (separation). In operation: RDH is in operation. Odd number of sheets: The counted number of originals is an odd number. Original eject: The original has been ejected. An abnormality in the manuscript indicating the condition:
Original size code indicating that RDH has malfunctioned: A
Detects the original size and sends it during PS. bit4. b
it, 3. bit2. bit, 1. The following sizes are shown in order of bito.

A4 horizontal A4 vertical B5 horizontal B5 vertical A5 horizontal A5 vertical B6 horizontal B6 vertical reciprocating postcard postcard (A6 vertical) Line slider 1 Line slider 2 11"X], 7"11"X81/2"10"X15"10" X14 wholesale (ooooo): (oooor): A 3 (00010): (00011): (00J, OO): (00101): (00110): (00111): (01000): (01001): (0101,0 ) : (01011): (ottoo): (01101): ((1111G): (01111) : (10000): (10001): (iooto): (10011): (10100): 8 1/2"X 1 4” (10
101): 8 1/2" x 1 3" (10110
): 8 1/2”X 1 1~(10111):
8 1/2” x 5 1/2” (11000):
8 1/4"X 1 3" (0001): 8"
X I 3” (11010): 8”X 10
1/2" (11011): 8" x 1 0" (1
1100): 5 1/2"X81/2" (111
01): Library card (6-series type) (11110): Library card (8-series type) (11111): Unknown RDH connection: Indicates that RDH200 is connected to the main unit Door opening/closing: When the door of RDH200 is open As shown in Figure 6d, the timing of transmission and reception is such that when transmitting, each data interval is at least 15m5ec, and when receiving, each data check is at least 10+1
This is done every sec.

Next, specific control operations will be explained with reference to the flowcharts shown in FIGS. 1a to 1g.

FIG. 1a is a flowchart showing the processing contents in the two-page spread→duplex mode. After switching to cover mode (
Step I2: Steps and language are omitted below in parentheses), when the start key is pressed (13), the number of original sheets is detected (14), original paper is fed (15), transfer paper is fed (16).
), copy processing (17), transfer paper ejection (18), and document ejection (19). If there are still documents at this point, repeat steps 15 to 29 and
If there is transfer paper, it will be ejected outside and the process will end (2
0-22).

Each process shown in FIG. 1a will be explained in detail below.

FIG. 1b is a flowchart 1- showing the contents of the cover mode set processing in step 12 of FIG. 1a. First, the rising edge of the pulse generated when the cover key 27 is pressed is detected (3I), and if the edge is detected, processing regarding the cover mode flag is performed. In other words, if the front cover mode flag is set to 1-,
In addition to resetting this, the front and back cover mode flags are set to 1 (32 to 34). If the front and back cover mode flag is set to 7-1, reset this and also reset the 1-front cover mode flag (35 to 3
7). If neither flag was set.

The front cover mode flag is set to 1, and the front and back cover mode flags are reset (38, 39).

That is, by pressing the cover key 27, it is possible to select a mode for inserting a front cover or a front cover and a back cover, and each time the cover key 27 is pressed, the mode for inserting a cover (no cover) is selected.
The mode changes sequentially: → (front cover mode) → (front and back cover mode) → (no cover mode).

Further, the guidance display section 9 shown in FIG. 3a provides displays for operations and warnings.

FIG. 1c is a flowchart showing the content of the document number detection process in step 14 of FIG. 1a. This process is necessary because if you do not know the differences between 5g documents (front cover document, back cover document, document on the next page of the front cover document, document on the previous page of the back cover document, etc.), you will not be able to know when to feed the paper from the cover cassette. RD H to judge it by the number of sheets.
200 is used to count the number of original sheets.

The start key 27 is pressed (step 1 in Fig. 1a).
3), this process is started, and if the RD 8200 is used, the counting operation by the RD H200 is executed (
41.42). It outputs a document count signal to the RD H200, waits until the number of document sheets is received, and when the number of document sheets is received, it is memorized in the storage unit 410 and clears the document number counter for monitoring document errors. (43-45), and return.

Note that when RD) [200 is not in use, the number of originals cannot be determined automatically, so it is necessary to enter it manually (46).

In this process, the difference between the originals is determined based on the number of originals, but any method may be used as long as the difference between the originals can be determined without the number of originals. Figure 1d shows the document feeding process in step 15 of Figure 1a. This is a flowchart 1- showing the contents.

Here, in the copying system of this embodiment, there is no reversal ejection mechanism for ejecting the transfer paper after copying, and the original is stacked after ejection so that the front and back relationships of the pages are the same as the original. The paper is stacked so that it is being fed from the paper.

RD when in front cover mode or front and back cover mode
The number of originals received from H200 is 1 as the number of image creations.
Calculate the document number data so that there is one page each for the cover document and two pages each for the other documents (51.5
2,55.56).

Here, when the document counter is 0 in front cover mode (M
(first time when no original or transfer paper is fed), increment the original counter, set the blank copy mode so that the back of the final transfer paper is blank (no image formation), and return (57 to 59). )do. This blank copy mode is a mode for putting transfer paper into the intermediate tray 146, and is canceled when the transfer paper is put into the intermediate tray 146.

Normally, the original counter is incremented (SO).

When the contents of the counter match the number of manuscripts, it is determined that the manuscript is a front cover manuscript (61.67). In addition, only in the front and back cover mode (63), when the counter is 1, it is treated as a back cover document 64, 69), and when the counter is 2, the second side of the back cover (front in terms of pages) (in this example, The right half of the two-page spread yK draft) is judged as (65, 70). In addition, when the counter is an even number, it is determined that it is the second side of the document (66.72).

When the above judgment is made, when using the DF, the document feed operation is performed, the transfer paper feed operation is performed, and the process returns (73 to 7).
5).

Also, when it is determined that the content of the manuscript counter is one page less than the manuscript number data, it is determined that the first page (in this embodiment, the left half of the double-page manuscript) is the front (after the page) of the front cover manuscript62.
6U, otherwise, when the counter is an odd number, the first side of the original is determined (66.71); in these cases, the process returns without performing the original feeding operation in order to use the same original as the previously fed original. .

In addition, when the front cover mode or front and back cover mode is not selected, when the value of the original counter is O, increment the value of the counter by 1, set the blank copy mode, and return.53, 58, 59), the kW is When the value of the document counter is an even number, it is determined that it is the second side of the document.

When the number is odd, it is determined that it is the first page of the document. Document feeding is performed only for the second side (54, 66, 71-75).6 When the transfer paper feeding process (1G) is completed, copying process (15) is entered in the main routine shown in FIG. 1a. During this copying process, the fed document is exposed to light, and the image process described above (
An image is formed on the fed transfer paper in the image forming process (described in FIG. 2). Note that the exposure of the original is that the original is a cover original.

If it is a back cover original, the area of the original is exposed once, but if it is a two-page spread original, the corresponding area on the right half of the original is exposed first, and when the next transfer sheet is fed, the remaining left side is exposed. Expose half. That is, two exposures are performed for one double-page document.

FIG. 1e is a flowchart showing the details of the transfer paper feeding process in step 16 of FIG. 1a. The second side of the original after the front cover original and the back cover original (front in terms of pages) is fed from the intermediate tray 146 (81, 84, 8
6,87). The first manuscript before the back cover manuscript and front cover manuscript
Special paper is fed for the surface (82, 83, 89
). Also, in the front cover mode, plain paper is fed in the blank copy mode in which the image is not placed on the back side of the transfer paper on the second side of the final original.

For other originals, the first side paper feed position is from the intermediate [-ray 146], and the second side paper feed position is from the selected cassette (plain paper).

FIG. 1f is a flowchart showing the details of the transfer paper discharge process in step 18 of FIG. 1d. The transfer paper for the front cover document and the transfer paper for the second side of the document are transferred to a paper ejection tray (91,
94, 95), transfer paper for the back cover original, in the blank copy mode, and transfer paper for the first side of the original are discharged to the intermediate tray 146.

FIG. 1g is a flowchart showing the contents of the process of the cover mode cellar 1- in step 1 of FIG. 1a. At the end of front cover copy, back cover copy, and first side copy (101 to 103), RDI (when using 200, ejects the original and returns 104, 105).

When the RD 0200 is not in use, the process is interrupted to replace the original (104, 106). Then, since the same original will be used in the next operation except for prompting the operator to replace the original, the process returns without ejecting the original (101 to 103).

As explained above, according to this embodiment, the front side of one cover document is transferred to the front side of the special paper for the cover that is conveyed first, and the back side of the special paper for the cover that uses the transfer method is transferred to the next fed double-page spread. The image corresponding to the right half of the original is transferred, and the special paper is ejected to the outside of the device. The image on the remaining left half of the two-page spread document is then transferred to the front side of the transported plain paper, and then the right half of the transported two-page spread document is transferred to the back side of the plain paper, and the image is transferred to the plain paper that has been transferred on both sides. is discharged to the outside. Furthermore, the left half of the two-page spread document before the final document is transferred onto the front side of the special paper that is transported, and the image of the back cover document that is transported next is transferred to the back side of the special paper, and the document is ejected to the outside. do.

That is, double-sided recording is also performed on the back sides of the special paper that is conveyed first and last.

Figure 7a shows how the IIA manuscript page corresponds to the transfer paper (recording paper) when two spread manuscripts, a cover manuscript, and a back cover manuscript were copied in the double spread mode and the front and back cover mode of the apparatus of this embodiment. shows. Further, FIG. 7b shows the correspondence of manuscript pages to transfer paper (recording paper) when two double-page spread manuscripts and a cover manuscript are copied in the double-page spread mode and the front cover mode of the apparatus of this embodiment. .

〔Effect of the invention〕

As described above, when the transfer paper obtained according to the present invention is bound, it is possible to form a document similar to a book-like document that is the basis of a double-page document. Therefore, the image information such as characters spread across the two-page spread is not damaged, and since the copy is made on the back side of the cover, transfer paper can be saved.

[Brief explanation of drawings]

Figure 1a, Figure 1b, Figure 1C, Figure 1d, Figure 1e,
FIG. 1f and FIG. 1g are flowcharts showing a part of the operation of the main control section 400 shown in FIG. FIG. 2 is a cross-sectional view showing the configuration of the main body 100 of the copying apparatus, and FIGS. 3a and 3b are the operating and
3 is a plan view showing the appearance of a display board 150. FIG. FIG. 4 is a cross-sectional view showing the configuration of a recycling automatic document feeder 200 on which a copying machine main body is placed. FIG. 5 is a block diagram showing the electrical control system of the embodiment device. Figure 6a shows the main control unit 400 and RDH shown in Figure 5.
4 is a block diagram showing connections with a control unit 450. FIG. 6b and 6C are schematic diagrams showing the format of data transmitted between the main control section 400 and the RDH control section 450 shown in FIG. 5, and FIG. 6d shows the transmission timing. FIG. FIG. 7a is a schematic perspective view showing the correspondence between the transfer paper and the document when copying is performed in the front and back cover mode in the two-page spread mode of this embodiment, and FIG. 7b is a front and back cover mode in the two-page spread mode of this embodiment FIG. 3 is a schematic perspective view showing the correspondence between transfer paper and a document when copying is performed in cover mode. Work 00: Copying device main body ■10: Optical system 120: Imaging system (110,
120: Copy image forming means) 130: Paper feeding system (recording sheet supplying means) 140: Paper refeeding system (recording sheet reversing means)
150: Operation & display board 27: Cover key (mode input means) 200: Recycling automatic document feeder 210: Document placement table 220: i document feeding system 2
30: Original resetting system 400: Main control section (surface recording control means) 410: Storage section 420: Optical control section 430: AC control section 440: Operation control section 450: RDH
Control Department Patent Applicant Riko Co., Ltd. Figure 1C Figure 1 f Figure 1 G Figure A Figure 6C Figure RD) ) Voice 7b figure (front cover mode)

Claims (1)

[Scope of Claims] Image forming means for recording an exposed image on a recording sheet supplied to an image forming position; Recording sheet supply means for supplying to the copy image forming means; Recording sheet reversing means that turns over the recording sheet on which one side has been recorded and supplies it to the image forming position, and discharges the recording sheet on which both sides have been recorded out of the apparatus. ; Input means for specifying the back cover; When the back cover is specified, the exposure of the back cover original and the half of the double-page spread document immediately before the back cover, whichever comes first; At the time of exposure, the recording sheet supply means is specified to supply the second type of recording sheet, the back cover original and the half side are recorded on the front and back sides of the second type of recording sheet, and the two-page spread original of the page immediately before the back cover is recorded. For the other half of the double-page spread document and the immediately preceding page of this double-page spread document, during the preceding exposure, the recording sheet supply means is designated to supply the first type of recording sheet, and recording is performed on the front and back surfaces thereof. A double-sided copying apparatus, comprising: a surface recording control means;