JPH0456874A - double-sided copying device - Google Patents

Abstract

PURPOSE:To make a backside of a cover blanc or make sure there is no omitting of information of the backside of the cover original when copying in both side recording mode by specifying feeding of cover paper against a first piece of original (cover) and specifying both side copying to a recording sheet reversing means. CONSTITUTION:A two recordings control means specifying feeding of the cover paper to a recording sheet feeding means 130 against the first piece of original (cover) and specifying one side copying to the recording sheet reversing means 140 in response to starting instruction of the copying operation of a starting inputting means, and specifying feeding of regular paper to the recording sheet feeding means 130 against a second side of the first piece of original onward and specifying both side copying to the recording sheet reversing means 140 when one side recording of a leading recording sheet is specified. Thus, even when there is information on the backside of a cover original, a copied record set of both side recording where correct response is made by the recorded image to the combination of the cover and other originals in the original stacking setting, and the backside of the cover is blanc.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an image forming apparatus having a double-sided copying function, and particularly to an image forming apparatus having a double-sided copying function, and particularly an image forming apparatus that selectively copies onto a different type of recording sheet for the cover in addition to the double-sided copying function. The present invention relates to a double-sided copying device having a recording mode.

[Conventional technology]

In general, double-sided copying devices have a single-sided copy mode that copies single-sided copies from single-sided or double-sided originals, a single-sided → double-sided mode that copies from a single-sided original onto both sides of recording paper, and a double-sided copy mode that copies a single-sided original onto both sides of recording paper. It has a screen → double-sided mode for copying.

In the single-sided → double-sided mode, if double-sided copying is performed from a single-sided original including a cover original, if the number of originals is even, the copying operation will be performed on the back side of the cover.

However, when an image is formed on the back side of a cover, the image may be reflected on the front side of the cover, spoiling the appearance of the cover.

Furthermore, since the cover and non-cover paper may be separated, it is preferable that the back side of the cover is blank. For this reason, a copying apparatus has been proposed in which a cover is inserted during one-sided → double-sided copying mode, and no copying is performed on the back side of the cover, and also capable of double-sided → double-sided copying mode (Japanese Patent Laid-Open No. 1-2361
Publication No. 25).

[Problem to be solved by the invention]

In the double-sided copying apparatus disclosed in Japanese Unexamined Patent Publication No. 1-236125, it is assumed that single-sided copying is performed for only the cover by selecting single-sided copying for the cover even in the duplex→duplex copying mode.

When the original is a double-sided original, the back side of the first cover original is often blank, and the above-mentioned apparatus can usually handle this to some extent. However, of course, there is image information such as text on the back side of the cover manuscript (
(The back side may not be blank), and in this case, the information on the back side is not copied and is omitted.

SUMMARY OF THE INVENTION An object of the present invention is to provide a five-sided recording device that forms an appropriate cover with a blank back side in a single-sided recording mode and prevents information leakage on the back side of the cover document during copying.

[Means to solve the problem]

The double-sided copying apparatus of the present invention includes a copy image forming means (1) for recording an image of a document at an exposure position (111) on a recording sheet.
oo, 110) ; The stacked originals are fed one by one to the exposure position (111) in the stacked order, and after exposing one side of each original, it is turned over and fed again to the exposure position W (111) to finish the exposure. and a document supplying means (200) that supplies the next document to the exposure position (111); when 5 single-sided is specified according to the specification of double-sided/single-sided, the copy image forming means (
100, 110) ejects the recording sheet on which recording has been completed to the outside of the apparatus, and when both sides are designated, the recording sheet on which one side has been recorded is turned over and the copy image forming means (100, 110)
Recording sheet reversing means (140) that feeds the recording sheet to the image forming position (0, 110) and discharges the recording sheet after image recording on both sides to the outside of the apparatus; Recording sheet supply means (130) for selectively supplying one of the two types of recording sheets (cover paper) to the copy image forming means (100, 110); Mode input means for specifying single-sided recording of the first recording sheet ( 27); Start input means (40) for instructing the start of copying operation
:And, when single-sided recording of the first recording sheet is specified by the mode input means (27), the first document (cover) is The recording sheet supplying means (130) is designated to supply the second type of recording sheet (cover sheet), the recording sheet reversing means (140) is designated to supply one side, and the second and subsequent sides of the first original are recording sheet supply means (13
0) is provided with surface recording control means (400) for specifying supply of the first type of recording sheet (plain paper), and recording sheet reversing means (140) for specifying both sides.

[Effect]

The operator loads the document stack set on the document supplying means (200) with the cover in the order of feeding first, inputs single-sided recording of the first recording sheet using the mode input means (27), and then inputs the single-sided recording of the first recording sheet using the mode input means (27). ), the 5-side recording control means (400) starts the 5-start input means (4).
In response to the instruction to start the copying operation in step 0), the first document (
The recording sheet supply means (130) has a second
Specify the supply of the seed recording sheet (cover paper), specify both sides to the recording sheet reversing means (140), and specify the recording sheet supply means (130) for the second and subsequent sides of the first document. The supply of the first type of recording sheet (plain paper) is designated, and both sides are designated for the recording sheet reversing means (140).

As a result, the document supplying means (200) supplies the first document to the exposure position (lit), and when the exposure is completed, turns it over and supplies it again to the exposure position [(111), and when the exposure is completed, it is Eject the second original and set it to the exposure position [(111)
supply to. The original is turned over and re-supplied for double-sided exposure until after Iik.

Further, the recording sheet supply means (130) feeds out a second type of recording sheet (cover sheet) for the first document, and feeds out a second type of recording sheet (cover sheet) for the second and subsequent sides of the first document. Send out one type of recording sheet (plain paper).

The copy image forming means (100, 110) exposes the surface of the document sent to the exposure position [(111) as described above, and transfers the image to the recording paper supplied as described above and the recording sheet reversing means ( 140) copies and records on the recording paper that is returned and supplied as follows.

Furthermore, the recording sheet reversing means (140) ejects the second type of recording sheet (cover sheet) on which the first sheet of the document has been recorded (recording of the first side) out of the apparatus, and Second manuscript
In the case of recording on the other side, when the first side has been recorded, it is turned over and returned to the copy image forming means (100, 110),
Ejected from the device when the second side has been recorded.

Therefore, the first recording sheet becomes a second type recording sheet (display paper) in which the first side is recorded and the second side is not recorded, and the second and subsequent recording sheets are the first side and the second side. Second
This is the first type of recording sheet (plain paper) on which the surface is recorded.

As described above, according to the present invention, when a set of originals is loaded into the original supply bag @ (200) with the cover of the original in the order of feeding first, even if there is information on the back side of the cover original, the stacked set of originals is A double-sided copy record set is obtained in which recorded images correctly correspond to the cover and other document combinations, and the back side of the cover is blank.

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. First mirror 113.
.

Second mirror f132 + third mirror 1138. The imaging system 120 includes a fourth mirror 113a + a fifth mirror 113, a lens 114, a dust-proof glass 115, etc., and includes a photosensitive drum 121, a charger 122 disposed around the photosensitive drum 121, an eraser 123, and the like. Developing device 124. 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) 12
9, cleaner 12A, and photosensitive drum 12
1, a conveyance bell h12B, a fixing device 12C, etc., which are arranged downstream of 1.

The paper feed system 130 has five stages, including a single manual paper feed tray 1310 + a first paper feed tray 131. ．． The second paper feed tray 1312, the third paper feed tray 1313, the fourth paper feed tray 1314, and each paper feed tray (however, the manual paper feed tray 131o and the first paper feed tray 131] are aligned) Equipped with call rollers 1321, 132□, 1
323° 132a + paper feed roller 1331p 1332
, 1333 , 1334 .

and reverse roller 134. , 134□, 134J,
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 #4 paper table 1314.

The paper refeeding system 140 has a switching claw 141. Approaching/separating roller 142° reversing guide 143. Reversing roller 144. Gate claw 145
゜Intermediate tray 146. Tip roller 147. Vapor stopper 148. Call Koro 149. & paper roller L4A
, a reversing roller 14B, a paper discharge roller 14C, etc.

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. The paper feeding roller rotates in the feeding direction of the recording paper, and the reversing roller rotates in the opposite direction, preventing double feeding and delivering the best quality paper.
Only one sheet of recording paper is sent toward registration rollers 135.

During this time, the optical system 110 scans the document on the contact glass 111, and the light reflected from the document illuminated by the exposure lamp 112 is transmitted to the first mirror 1131 + second mirror 113□.

Third mirror 1133. Lens 114. Fourth mirror 113
4° 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 is rotating clockwise in the drawing, and its photosensitive surface is uniformly charged by the charger 122 before being irradiated with the light reflected from the original by the optical system 110, and the static electricity is removed by the eraser 123. An image area is formed. 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, and becomes a toner image with toner attached 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, the PTL 12
5, static electricity is removed 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 toner is removed from the photosensitive surface of the photosensitive drum 121 by a cleaner 12A, and the recording paper is sent to a fixing device 12C by a conveyor belt 12B.

The fixing roller 12C 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 through the switching claw 141, the switching claw 141 is switched, the contact/separation roller 142 is brought 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 stocked in the intermediate tray 146 is sent to the paper feed roller L4A by the calling roller 149 at the start of any copying in the duplex mode, and the topmost sheet is transferred to the registration roller by the paper feed roller 14A and the reverse roller 14B. 1
Sent to 35th.

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 to set the timer time.

Timer display 2: Lights up when the timer is set and is operating.6 Program kill 3 Used when storing and recalling 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.

When using sorter 9: 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.

Double-sided 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 spread document one side at a time and automatically copying a screen original one side at a time.

Page continuous shooting display 26: Lights up during page snapshot mode.

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 WR adjustment-7: Used when adjusting the density of a copy image.

Automatic density key 38: Automatic density [Use when you want to set to J state.

Clear/stop key 39: Used when changing the number of cents, stopping continuous copying midway through, and 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 to return various modes to standard mode, to switch between preheating state and normal state, and to set 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 when the start key 40 is pressed.

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 display 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: The misfeed position [(A-G) lights up at the same time as the misfeed display.

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

Automatic density display 71: Lights up when automatically adjusting the density wIi of a copy 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.

The RD H200 will be explained with reference to FIG. 4, which shows a cross section of the RD H200.

The RD H200 is a type of automatic document feeder and ejector that automatically feeds the document onto the contact glass 111 before starting optical scanning and ejects it after the optical scan is completed. By making it possible to repeatedly feed the same original by resetting it to the top), it is possible to make copies of single-sided originals and make re-copies in the event of a misfeed.

This device has a 5M document loading table 210. The document transport system 220° includes a document resetting system 230, a reversing system 240, and the like.

A recycle lever drive motor 2 is mounted on the original table 210.
11. A recycle lever 212 coupled to the shaft and a sensor 213 that detects rotation of the recycle lever 212
It has. When a document is set and a copy start instruction is given, the motor 211 rotates the recycle lever 212 to place the final document on top. After that, when the final document is fed and the lever 212 rotates due to its own weight, and its tip falls from the notch formed in the document mounting table 210,
Immediately before that, sensor 213 detects lever 212. In other words, the sensor 213 detects one of the series of documents originally placed.
Detect cycles. 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 half-moon rollers 221. Feed 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. As a result, the transport operation of the original is started, and first, the half-moon roller 221 separates the original. Since a plurality of these documents may overlap, only the lowest document is sent to the conveyance roller 224 during the production period of the feed belt 222 and the 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 in this case, the paper feed sensor 228 detects misfeed.

The re-cent system 230 has a redirection Jfi 231. Ejection roller 2
32° 233 and 234 etc.

Resetting is performed upon completion of optical scanning, and the direction change plate 23
After selecting the ejection guide 235 by 1, the transport/rut 225 is reversed. As a result, the original is transferred to the ejection roller 23.
2. The document is ejected via 233 and 234 to the last (top) document on the document table.

The reversing system 240 includes a switchback roller 2419, a reversing sensor 2429, a reversing registration sensor 243, and a part of the original feeding system 220 and 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 switchback roller 241 guides the document to a reversing guide 244 , then reverses it and guides the document to a reversing paper feed guide 245 . At this time, the direction change plate 231
selects the reversing paper feed guide 245 and sends the document to the conveyor belt 225. Note that the timing of stopping the document in this case is determined by detection by the reversal registration sensor 243.

The above document feeding system 220. Depending on the operation of the original resetting system 230 and the reversing system 240, the original is normally fed and ejected normally ("normal feeding mode"), and the original is reversed, fed, and ejected as it is ("reverse displacement mode"). ``Moto'', ``Normal feed/reverse mode'' which feeds the original normally, reverses it and ejects it, and ``Reverse/reverse eject mode'' which reverses the document, feeds it, reverses it and then ejects it.
, a "reversal mode" in which only reversal is performed becomes possible.

Additionally, this RDH200 has a "original return mode" for returning yK documents. 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, the number of returned coins may be larger than the count value after one round, but
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 the electrical control i# system shown in FIG. This electrical control system includes a main control section 40
0 to storage unit 41O9 optical control unit 420°1〇control unit 430. Operation control unit 440 and RDH control unit 45
It consists of 0 mag.

The main control unit 400 monitors various sensors 420 provided in each part of the main body 100 and controls the load of each part, such as a renoid and a motor.

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 scanner 1.
2C 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 RD HZOO.

Serial piggyback 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 unit 400 to the RDH control unit 450 is represented by four addresses as shown in No. 6b[ffl, and the meaning of each signal is as follows.

Operation mode code: (bit6.bits, bit4
) (000) : Forward feed exclusion mode (ooi) : Reverse exclusion mode (010) : Forward feed repulsion mode (oti) : Reverse repulsion mode (100) : Reversal mode (101) Knee sheet positive Feed/discharge mode (110): Original return mode (111): Count mode Feed OUT: Start of paper ejection operation Feed N: Start of paper feeding operation (each operation mode) Preheating mode: Original insertion display OFF Interrupt mode: Interrupt mode Turn ON to save the document counter and press 1
Auto clear to restore the original counter that was evacuated when interrupt mode is OFF: Clear the mode and initialize the original by repeatedly discharging the paper when the recycle lever is not down Orientation code: Is it inch type or AB type when the original is detected? Transmit 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 2 Jam when feeding the original (same in original return mode, etc.) Lift UP: Indicates the RDH is open. Paper feeding start OK: g Document feeding is permitted for the recording paper after the original positioning is completed. Detection 2 There is a document on the M draft table. Document separation: Indicates that the recycle lever is down (separation). In operation: RDH is in operation. Document abnormality indicating that the document is being ejected completely:
Document size code indicating that RDH has malfunctioned:
Detects and transmits Ha size during APS. bit4. b
it3. bit2. The following sizes are shown in the order of bitl and bito.

(00000) : (00001) : A 3 (00010) : (00011) : B 4 (00100) : A 4 horizontal (00101) : A 4 vertical (00110) : B 5 horizontal (00111) : B 5 vertical (01000) ) : A 5 horizontal (01001) : A 5 vertical (01010) : B 6 horizontal (01011) : B 6 vertical (01100) : Double postcard (01101) : Postcard (AS vertical) (01110)
: (01111): (toooo): (10001): (10010): (10011): (10100): (10101): (10110): (10111): (11000): (tiooi): (11010): ( 11011): (11100): (11101): (11110): (11111): RDH connection: Line slider l Line slider 2 11”X17” 11”X 8 1/2” 10”X L 5” 10"X14" 8 1/2"X 14'= 81/2"X 13"81/2"X11"81/2"X51/2"81/4"X13"8"X13"8"x L 01/2"8" As shown in Figure 6d, the timing of transmission and reception is such that when transmitting, each data interval is at least 151 See, and when receiving, each data check is at least 10m5.
This is done every ec.

Next, the specific control operation of the main control unit 400 will be explained in 1a.
This will be explained with reference to the flowcharts shown in FIGS.

The apparatus of this embodiment operates in a one-sided→single-sided mode in which a single-sided original is recorded on one side of the recording paper, a one-sided→duplex mode in which one-sided original is recorded on both sides of the recording paper, and a double-sided original is recorded on one side of the recording paper. It has four recording modes: double-sided → single-sided mode for recording, and double-sided → double-sided mode for recording on both sides of recording paper from a double-sided original.

FIG. 1a is a flowchart showing the processing contents in the two-sided → orchid-sided mode. After setting the number of copies and cover mode (11, 12), when the START key is pressed (
13) First, the back copy mode flag indicating the back side copy operation is reset (14). This is because the first copy is always a table.

Next, the original is fed using the RD H200 (15).

Transfer paper processing is performed (16). The details of this processing will be described later.

Thereafter, the document set in the RDH 200 is reversed (17) and transfer processing is performed (18). This transfer paper processing (18) is also the same process as the transfer paper processing in step 1G, and the details will be described later.

When the transfer paper processing is completed, the original is discharged from the RDH 200 (19). If you still have the manuscript (20), step 1
Repeat steps 5 to 19.

Please check if there is transfer paper in the intermediate tray 14G.21
), if there is a transfer paper, the transfer paper is ejected to a paper ejection tray (not shown) located ahead of the ejection roller 14c (22).

FIG. 1b is a flowchart showing the contents of the cover mode set processing in step 12 of FIG. 1c.

First, the rising edge of the pulse generated when the cover key 27 is pressed is detected (31), and if the edge is detected, processing regarding the cover mode flag is performed. That is,
If the front cover mode flag has been set, it is reset and the front and back cover mode flags are set (32-34). If the front and back cover mode flags have been set, they are reset, and the front and back cover mode flags are also reset (35-37). If neither flag is set, the front cover mode flag is set, and the front and back cover mode flags are reset (38.degree. 39).

In other words, the cover insertion mode can be selected by pressing the cover key 27.
Each time you press (no cover mode) → (front cover mode)
The mode changes sequentially: → (front and back cover mode) → (coverless mode). Further, the guidance display section 9 shown in FIG. 3a provides displays for operations and warnings.

FIG. 1c is a flowchart showing the transfer paper processing in steps 16 and 18 of FIG. 1a. In this process, first, paper feeding processing (4) is performed, and this paper feeding processing will be described later.

Once paper is fed, copying processing is executed (42).

Thereafter, if the recording paper is a cover sheet for the front cover or a recording paper on which double-sided recording has already been performed (the back copy mode is set), the recording paper is discharged to the paper discharge tray (46).

If the sheet is not a cover sheet for the front cover and the back copy mode is not set, the sheet is discharged to the intermediate tray 1314.

The operations of steps 41 to 46 are repeated until the set number of sheets is reached (47).

When copying for the number of cents is completed, except when copying on special paper for a cover, the back copy mode flag is reversed, and then the copy side is reversed with respect to the original side (48.49)
.

FIG. 1d is a flowchart showing the content of the paper feeding process in step 41 of FIG. 1c. If you are in front cover mode or front and back cover mode, for the first document,
Now, the cassette 131 containing the special paper for the cover.
Paper is fed from step 4 (52 to 55). If the back copy mode is selected, paper is fed from the intermediate tray 146 (
51, 57).

For other documents, plain paper is fed from the paper feed table (56).

As described above, according to this embodiment, the front surface of the cover document is transferred onto the surface of the special paper for the cover that is conveyed first, and the transferred special paper is discharged to the outside. The back side of the cover document is then transferred to the front side of plain paper, and the document is ejected. Next, the front side of the second document that is fed is transferred to the back side of the plain paper, and the double-sided transferred paper is transferred. The plain paper is discharged to the outside.

Further, the back side of the second original is transferred onto the front side of the next conveyed plain paper, and the original is discharged to the outside. After that, both sides of the original are copied onto both sides of plain paper in the same way.

In other words, only the first recording paper (special paper) is single-sided.

FIG. 7 shows the correspondence of original pages to transfer paper when three double-sided originals are copied in the duplex → duplex mode and the front cover mode of the apparatus of this embodiment.

〔Effect of the invention〕

As described above, according to the present invention, the cover of the original is sent first and sent to the original No. 7 by the original feeding device ii! (20
0), even if there is information on the back side of the cover original, the recorded image correctly corresponds to the combination of the cover and other originals in a stacked set of originals, and the back side of the cover is blank.Double-sided copy recording. You will get a set.

[Brief explanation of drawings]

FIGS. 1a, 1b, 1c, and 1d are flowcharts showing 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 the main body of the copying machine 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 RD shown in Figure 5.
4 is a block diagram showing connection with an H control unit 450. FIG. 6b and GC 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 is a timing diagram showing the transmission timing. It is a diagram. FIG. 7 is a schematic perspective view showing the correspondence between the transfer paper and the original when copying is performed in the cover mode of this embodiment. 230: Original image cent system 400: Main control section (area recording control means) 410: Storage section 420: Optical control section 430: AC
Control unit 440: @Work control unit 450:
RDH control section

Claims (1)

[Claims] Copy image forming means for recording an image of an original at an exposure position on a recording sheet; supplying stacked originals one by one to the exposure position in the order of stacking, and exposing one side of each original to the exposure position; Original supplying means which turns over the document and supplies it again to the exposure position, and when the exposure is completed, supplies the next original to the exposure position; according to the designation of double-sided/single-sided, when single-sided is designated, the copy image forming means records The finished recording sheet is ejected from the device, and when double-sided printing is specified, the recording sheet on which one side of the image has been recorded is turned over and fed to the image forming position of the copy image forming means to record the image on both sides. Recording sheet reversing means for discharging the sheet out of the apparatus; Recording sheet supplying means for selectively supplying either the first type of recording sheet or the second type of recording sheet to the copy image forming means according to designation; Top recording mode input means for specifying single-sided recording of a sheet; start input means for instructing the start of a copying operation; and, when the mode input means specifies single-sided recording of the first recording sheet, the start input means In response to the instruction to start the copying operation, the recording sheet supplying means is designated to supply the second type of recording sheet, the recording sheet reversing means is designated to supply one side of the second type of recording sheet, and the first sheet is A double-sided copying apparatus comprising: surface recording control means for specifying the supply of a first type of recording sheet to a recording sheet supplying means and specifying both sides to a recording sheet reversing means for the second and subsequent sides of an original document.