JPH0456873A - Both side copying device - Google Patents

Abstract

PURPOSE:To prevent needless recording and omitting of recording due to mix up of recording of a cover and other originals by providing a cover recording mode selectively carrying out copying to a different type of a recording sheet for the cover in addition to the both side copying function. CONSTITUTION:When a one side copying of a leading original is specified by a mode inputting means, a first piece of original is fed to an exposure position 111 by an original feeding means, when that exposure is completed, the original is ejected, a second piece of original is fed to the exposure position 111, the second piece of original is turned over and fed to the exposure position 111 again after the exposure is finished, and when that exposure is completed, that is ejected, a third piece of original is fed to the exposure position 111, and the third to the last originals are turned over for both side exposure and refeeding is carried out. Cover paper is fed out against a first piece of original and regular paper is fed out against originals of the second piece onward by a recording sheet feeding means 130. Thus, copied records without needless recording or omitting of recording due mix up of the cover and other original records can be obtained.

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 use a single-sided copy mode that copies a single-sided original or a double-sided original to a single-sided copy, 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 single-sided original onto both sides of recording paper. It has a double-sided → double-sided mode for copying.

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

For this reason, a copying apparatus has been proposed in which a cover is inserted during single-sided → double-sided copying, but no copying is performed on the back side of the cover, and a copying apparatus is also capable of 5-sided → double-sided copying mode (Japanese Patent Application Laid-Open No. 1999-1991).
236125).

[Problem to be solved by the invention]

The cover document is usually a single-sided document (the back side is blank), and there is a drawback that it is inefficient to perform a copying operation on the back side of the cover document. Japanese Patent Publication No. 1-23
In such a case, the double-sided copying apparatus disclosed in Publication No. 6125 selects single-sided copying for the cover not only in single-sided → double-sided copying but also in double-sided → double-sided copying mode, so that only the back side copying operation is not executed for the cover. , it is expected that the copying efficiency will be higher.6 By the way, in the above-mentioned double-sided copying device, before starting the copying process, the automatic document feeder is driven to feed the documents, counts the number of documents stacked on it, and calculates this count. When the process is finished, copying of the specified single-sided recording or double-sided recording on plain paper is started, and the last original is determined from the number of copies (the number of originals fed) and the above count value, and the copying process is performed for the cover page. A cover copying operation is performed to supply recording paper.

Therefore, in either single-sided or double-sided recording mode, the operator must load the document set onto the automatic document feeder so that the cover is last fed to the contact glass by the automatic document feeder. However,
In the case of double-sided recording, copying may be started from the top of the stacked document set, or vice versa.

Therefore, in the case of double-sided copying, if the operator attaches the JM8 set to the automatic document feeder so that the cover of the original set is first fed to the contact glass by the automatic document feeder and sets the cover to single-sided recording, The front and back sides of the original are recorded on the front and back sides of the first sheet of plain paper, and only the first side of the final plate of the manuscript is recorded on the cover sheet, and the second
The surface is not recorded. In other words, the cover and other records of the manuscript become confused, resulting in unnecessary records and errors.

The present invention provides a copying order in which the first cover is the first copy and a copying order in which the cover is the last copy in a five-sided recording mode, which eliminates wasted recording and recording omissions due to confusion between the cover and other documents. The purpose is to make it possible.

[Means to solve the problem]

The double-sided copying apparatus of the present invention has a copy image forming means (1
00, 110) ; The stacked originals are supplied one by one to the exposure position (111) in the stacked order, and depending on the specification of double-sided/single-sided, if one-sided is specified, one original is supplied to the exposure position (111). When the exposure is completed, the next document is supplied to the exposure position (111), and when double-sided is specified, after exposure of one side, it is turned over and supplied to the exposure position (111) again, and when the exposure is completed, the next document is supplied to the exposure position (111). of the original at the exposure position (111
); When one side is specified according to the specification of double-sided/single-sided, the copy image forming means (100, 110) discharges the recording sheet on which recording has been completed to the outside of the apparatus; When both sides are specified, the recording sheet on which the image has been recorded on one side is turned over and supplied to the image forming position of the copy image forming means (100° 110), and the recording sheet on which the image on both sides has been recorded is ejected from the apparatus. Recording sheet reversing means (140); selectively supplies either the first type of recording sheet (plain paper) or the second type of recording sheet (cover sheet) to the copy image forming means (100, 110) according to the specification. Recording sheet supplying means (130); First original (
mode input means (27) for specifying one-sided copying of the original (cover) and one-sided copying of the unfinished original (cover); start input means (40) for instructing the start of the copying operation; and mode input means (27) ), when one-sided copying of the first original is specified, the original supplying means (200) for the first original (cover) responds to an instruction to start the copying operation from the start input means (40). One side is specified, the recording sheet supplying means (1, 30) is specified to supply the second type of recording sheet (cover sheet), the recording sheet reversing means (140) is specified to be one side, and the second and subsequent documents are specified. In contrast, the document supplying means (200) specifies both sides, and the recording sheet supplying means (100)
30) specifies the supply of the first type recording sheet (plain paper), specifies both sides for the recording sheet reversing means (140), and allows one-sided copying of the unfinished original (cover) using the remote input means (27). When specified, in response to an instruction to start the copying operation from the start input means (40), the unfinished original (from the first sheet) is
The document feeding means (200
) specifies both sides, the recording sheet supply means (1, 30) specifies the supply of the first type recording sheet (plain paper), the recording sheet reversing means (140) specifies both sides, and the unfinished original ( The document supplying means (200) is designated to supply one side of the original (cover sheet), the recording sheet supplying means (130) is designated to supply the second type of recording sheet (cover sheet), and the recording sheet reversing means (14) is designated to supply the second type of recording sheet (cover sheet).
0) is a side recording control means (400) that specifies one side;
Equipped with

[Effect]

The operator loads the document stack set on the document supply means (200) with the cover in the order of feeding first, inputs one-sided copying of the first document using the mode input means (27), and then inputs the start input means (40). When the start of copying is input, the surface recording control means (400) starts the start input means (10)
In response to the instruction to start the copying operation, the document supplying means (200) specifies one side of the first document (cover), and the recording sheet supplying means (130) specifies the second type of recording sheet (
The recording sheet reversing means (140
) for the second and subsequent documents, specify double-sided for the document supply means (200), and supply the first type recording sheet (plain paper) to the recording sheet supply means (130). is specified, and both sides are specified to the recording sheet reversing means (140).

As a result, the fM document supply means (200) supplies the first document to the exposure position (111), discharges it after completing the exposure, and supplies the second document to the exposure position (111). After exposing one side of the shiso, turn it over and change the exposure position (111) again.
), and when the exposure is completed, it is ejected and the third original is fed to the exposure position (111), and the third to last originals are turned over and fed again for double-sided exposure.

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 first type of recording sheet for the second and subsequent documents. Feed out the 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 displays the image on the recording paper supplied as described above and the recording sheet reversing means (140). ) is copied and recorded on the recording paper that is returned and supplied as follows.

Further, the recording sheet reversing means (140) discharges the second type of recording sheet (cover sheet) on which the first page of the original was recorded (recording of the first side) out of the apparatus, and the second and subsequent sheets are ejected from the apparatus. In the case of recording the original, the document is turned over and returned to the copy image forming means (100, 110) when the first side has been recorded, and is ejected from the apparatus 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. This becomes the first type recording sheet (plain paper) on which the second side is recorded.

In this way, when a set of originals is loaded into the original supply device (200) with the cover of the original being fed first, the recorded images will correctly correspond to the combination of the cover and other originals in the original stacking sensor 1-. Moreover, a double-sided copy record set is obtained in which the back side of the cover is not subjected to any recording process.

On the other hand, the operator loads the document stack set on the document supply means (200) with the cover in the last feeding order, inputs one-sided copying of the unfinished document using the mode input means (27), and then inputs one-sided copying of the unfinished document using the mode input means (27), and then inputs the start input means ( 40), the surface recording control means (400) inputs the start input means (40).
In response to the instruction to start the copying operation in step 0), the document supplying means (
200) specifies both sides, and the recording sheet supply means (130)
) is designated to supply the first type of recording sheet (plain paper), the recording sheet reversing means (1, 40) is designated to supply both sides, and the original supplying means (200) is designated for unfinished originals (cover). One side is designated, the recording sheet supply means (130) is designated to supply the second type of recording sheet (cover sheet), and the recording sheet reversing means (140) is designated as one side.

As a result, the document supplying means (200) selects the first document! 5: It is supplied to the exposure position (111), and when the exposure of the first side is finished, it is turned over and supplied again to the exposure position (111), and when the exposure of the second side is finished, it is ejected and the second sheet of original is exposed. When the exposure of the first side is completed, it is turned over and fed again to the exposure position (Ill), and when the exposure of the second side is finished, it is ejected and the third sheet is placed at the exposure position @ (111
), and in this way, the documents from the first sheet to the last (cover) are turned over and re-supplied for double-sided exposure. The last document (cover) is supplied to the exposure position (10) and discharged after the exposure of its first side is completed.

Further, the recording sheet supply means (130) feeds out the first type recording sheet (plain paper) for the document from the first sheet to the last document, and for the last document (cover), Second
Send out the seed record sheet (cover paper).

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

Further, when the recording sheet reversing means (140) has recorded on the first side, the first type recording sheet (plain paper) from the first sheet to the last one is turned over and transferred to the copy image forming means (1,00°). 11
0) and discharged from the apparatus when the second side has been recorded. The last type 2 record sheet (cover sheet) is the
Ejected from the device when the surface has been recorded.

Therefore, the last recording sheet from the first sheet is the first type recording sheet (on which the first side and the second side are recorded).
Plain paper), and the last recording sheet is a second type recording sheet (cover paper) that records only the first side and does not record the second side.
becomes.

In this way, even when a set of originals is loaded into the original supply device (200) with the cover of the original in the last feeding order, the recorded image will correctly correspond to the combination of the cover and other originals in the stacked set of originals. A double-sided copy record set is obtained in which the back side of the gamo cover is not subjected to recording processing.

As described above, according to the present invention, in the case of double-sided recording, the covers of five originals are placed in the order of feeding first, and the originals are set in the original feeding device (
200), and also when loading the originals into the original feeding device i! with the cover of the original in the last feeding order. (20
0), it is possible to obtain a copy record without wasted records or omissions due to confusion between the cover and records of other original documents.

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

〔Example〕

First, a copying apparatus main body 100 according to an embodiment of the present invention will be described with reference to FIG.

The main body 100 is an electrostatic transfer type copying apparatus that fixes originals, and includes an optical system 1102, an image forming system 12o, a paper feeding system 130, a paper refeeding 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 1131
.

2nd mirror 1132, 3rd mirror 1133, 4th mirror 113a + 5th mirror 1135, lens 114
and a dustproof glass 115, etc., and the image forming system 12o is
Photosensitive drum 121 and charger 122 disposed around it. Eraser I23. Developing device 124. Pre-transfer static elimination lamp (hereinafter referred to as PTL) 125. Transfer charger 126° Separation charger 1272 Separation claw 128.
Pre-cleaning static neutralization charger (hereinafter referred to as PCC) 1
29, cleaner 12A, and photosensitive drum 1
It consists of a conveyor belt 12B, a fixing device 12C, etc. arranged downstream of 21.

The paper feed system 130 has five stages: 1 manual paper feed tray 1310 + 1st paper feed tray 1311 * 2nd paper feed tray 1312 , 3rd sheet feed tray 1313, 4th sheet feed tray 1314, and each sheet feed tray. (However, the manual paper feed tray 131o is shared with the first paper feed tray 1311). , 1322.13
23°132, , paper feed rollers 1331, 1332,
1332, 133a t and reverse roller 1341
r 1342 t 1343 m 1344F 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 has a switching claw 141. Approaching/separating roller 142° reversing guide 143. Reversing roller 144. Gate claw 145
゜Intermediate tray 146. Tip roller 147. Paper stopper [・18. Call t49. It consists of a paper feed roller [4A, 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. Send it to the paper feed roller. The paper feed roller rotates in the direction in which the recording paper is fed, and the reverse roller rotates in the opposite direction, preventing double feeding and producing 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 reflects light from the document illuminated by the exposure lamp 112 to the first mirror 113. , second mirror 1132 .

Third mirror H33* Lens II4. Fourth mirror 113
．． .

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 is rotating clockwise in the drawing, and its photosensitive surface is uniformly charged by a charging charger 122 before being irradiated with light reflected from the original by 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, and becomes a toner image with toner attached thereto 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 12g.

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 fixing@12C by a conveyor belt 12B.

The fixing device 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 5-sided 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 the leading edge is aligned and stored.

The recording paper stocked in the intermediate tray 146 is sent to the paper feed roller 14A by the calling roller [49] at the time of arbitrary copy start of the five-sided mode, and the topmost one is fed by the paper feed roller 14A and the reversing roller 14B. Registration roller 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,
The density is measured by the P sensor PSN installed downstream of the development@L24.
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 variable size, when setting Toji Yahata, when setting a 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 10: Used when entering the dimensions of the original.

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

Centering key II 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 allowance 1llI! II key 14: Used when you want to create binding margins (margins) on the left and right sides of the copy.

Binding 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.

Double-sided key 23: Used when making double-sided copies.

Double-sided display 24: Lights up when double-sided copying is in progress. 6-page continuous copying key 25: Used when automatically copying a spread original one side at a time and when automatically copying a double-sided original one side at a time.

Page snapshot 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 to adjust the density of a copy image.

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

Clear/stop key 39 = Used when you want to change the number of sheets set, stop continuous copying midway, or set 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 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.

Equal 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: WE (A-G) lights up at the position of misfeed 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 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 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 and eject the same original by resetting it in the top), it is possible to make copies of two-sided originals and make re-copies in the event of a misfeed.

This device includes a document placing table 21O2, a document feeding system 220.degree., a document re-centing 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 21 that detects the rotation of the recycle lever 212
It is equipped with 3. When a document is set and copy start is instructed, the motor 211 moves to the recycle lever 212.
Rotate and place it on top of the final document. 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 its 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. Also, the document feeding cycle is 2
If the number of cycles exceeds the number of cycles, each cycle is detected by placing the lever 212 on the final original when it is reset to the last position.

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. 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 in this case, the paper feed sensor 228 detects misfeed.

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 is formed by using together a switch bank roller 2411, a reversing sensor 2429, a reversing registration sensor 243, a part of the document feeding system 220, and a part of the document re-centing 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 valve roller 2 old guides the document to the reversing guide 244, then reverses it and guides it to the reversing 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 transferred to the conveyor belt 2.
Send to 25th. 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, there is a ``normal feeding mode'' in which the original is fed normally and ejected normally, and a ``normal feeding mode'' in which the original is reversed, fed, and ejected as is. ``Non-discharge mode'', ``Normal feed/counter-discharge mode'' in which the original is fed normally, reversed, and ejected; ``Non-reverse reversal mode'', in which the original is reversed, fed, reversed once, and then ejected; A "reversal mode" in which only reversal is performed becomes possible.

In addition, this RD H200 has a ``original return mode'' that returns the yK original.This mode is used when copying is not possible due to a jam, etc., or when a defective copy occurs for some reason. This is the return mode.Here,
Since the number of originals that have been copied is counted, the originals are fed and ejected until the cycle ends, and then the originals are fed as many times as the count value minus the number of returned sheets, and the specified original is set. do. 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
Storage unit 41O9 optical control unit 420°AC control unit 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.
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.bi75.bit4
) (000) : Forward feed, forward discharge mode (001) : Condensation/reverse exclusion mode (010) : Forward feed/reverse discharge mode (011) : Condensation/reverse wandering mode (100) : Reverse mode (101) Knee sheet Normal feed Normal wandering mode (110): ff Document return mode (111): Count mode feed ○UT: Start of wandering paper operation Feed N: Start of paper feeding operation (each operation mode) Preheating mode: yK Document insertion display OFF Interrupt mode : Turn on interrupt mode and save the document counter.
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 2 Jam feed I when document is ejected
N jam: Jam during document feeding (same in document return mode, etc.) Lift UP: Indicates that RDH is open. Paper feeding start OK: Recording paper is allowed to be fed after the document has been positioned in its normal position. Original detected. : Document is on the document table. Document separation: Indicates that the recycle lever is down (separation). In operation: RDH is in operation. Odd number of sheets 2 Indicates that the counted number of originals is an odd number. An abnormality in the manuscript indicating the condition:
Document size code indicating that RDH has malfunctioned:
When using APS, the document size is detected and sent. b1hi4. b
it, 3. bit2. The following sizes are shown in the order of bitl and bito.

(ooooo): -- (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 (A6 vertical) (01110)
Niline slider 1 (01111) Niline slider 2 (10000): 11 "X 17" (10001
): 11 "X 81/2" (10010):
10"X 15" (10011): 10"X 14
"(101,00): 8 1/2°'X14" (1
0101): 8 1/2"X l 3" (10
110): 8 1/2"X l 1" (10
111): 8 1/2''x 5 1/:l"(1
1000): 8 1/4" x 1 3" (110
01): 8'x 1 3" (11010): 8
″X 1 0 1/2″ (11011): 8″X
1 0” (11100): 5 1/2” x 8
t/2” (11101): Book card (6-card type)
(11110): Book card (8-piece type) (11111
): Unknown RDH connection: Indicates that the RDH200 is connected to the main unit. Door open/closed: Indicates that the door of the RDH200 is open. The timing of transmission and reception is as shown in Figure 6d. The data interval is at least 15nsec, and each data check is at least 10+W when receiving.
This is done every sec.

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

The apparatus of this embodiment has two modes: one-sided to one-sided mode in which a one-sided original is recorded on one side of the recording paper, one-sided to two-sided mode in which one-sided original is recorded on both sides of the recording paper, and one-sided to two-sided mode is recorded from a one-sided original to 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 1-duplex→duplex mode. After setting the number of copies and cover mode (11, 12), when the start key is pressed (
13) First, feed the original using RDH200 (14
). Next, the transfer paper is fed (15). Details of this process will be described later.

After that, perform copying processing on the front side (16), check whether the transfer paper is special paper for the cover page17), and if the transfer paper is plain paper, transport it to the intermediate tray 14618), If it is a special paper, the paper is ejected to a paper ejection tray (not shown) located beyond the ejection roller 14c (19).

until the number of sent copies is reached (20).

Repeat steps 15-19.

After that, please check whether the 5 transfer paper is special paper21)
, If the transfer paper is special paper, eject the original (22
). If the transfer paper is plain paper, first RD H20
24), then feed the paper from the intermediate tray, perform the same copying process on the back side for the set number of sheets, and eject the document by the RD H200 (24).
25-28).

If there are still manuscripts (23), the processes of steps 14 to 28 are repeated.

FIG. 1b is a flowchart 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 (31), and if the edge is detected, processing regarding the cover mode flag is performed. i.e. 1
If the front cover mode flag is set, reset it and set the back cover mode flag.
1-Do (32-34). If the back cover mode flag is set, reset it to 1~,
Reset the front cover mote flag as well (35-37)
.

If neither flag is set, the front cover mode flag is set and the back cover moto flag is reset (38.39).

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

FIG. 1c is a flowchart showing the details of the transfer paper feeding process from the paper feeding cassette in step 15 of FIG. 1a. If the front cover mode is selected, the cassette 1314 contains special paper for the cover for the first original.
(41°42.43). If the back cover mode is selected, the final document is fed from the cassette 1314 in which special paper is set (46, 4
7,48).

For other originals, feed plain paper (45.49
).

〔Effect of the invention〕

As described above, according to the present invention, in the case of double-sided recording, the cover of the document is placed first in the feeding order, and the document is set in the document feeder (
200), and when loading the original set into the original supply bag [(200) with the covers of the originals in the order of last feeding, there is confusion between one cover and the records of other originals. It is possible to obtain duplicate records without unnecessary records or record omissions.

[Brief explanation of drawings]

FIGS. 1a, 1b, and 1c are flowcharts showing 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 is a timing diagram showing the transmission timing. It is a diagram. 200: Recycling automatic document feeder [(g document supply means)
210: Original table 220: Original transport system 23
0: Original reseno 1-system 400: Main control section (surface recording control means) 410: Storage section 420: Optical control section 430: AC
Control unit 440: Operation control unit 450: R
DH 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 depending on the designation of double-sided/single-sided, When one side is specified, one original is fed to the exposure position, and when that exposure is completed, the next original is fed to the exposure position, and when two sides are specified, after one side is exposed, it is turned over and returned to the exposure position. Original supplying means that supplies the next original to the exposure position after completing the exposure; Depending on the designation of double-sided/single-sided, if single-sided is designated, the recording sheet on which the copy image forming means has finished recording is transferred to the apparatus; When double-sided printing is specified, the recording sheet with images recorded on one side is turned over and supplied to the image forming position of the copy image forming means, and the recording sheet with images recorded on both sides is discharged outside the apparatus. Recording sheet reversing means; 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; Single-sided copying of the leading original and remaining originals mode input means for specifying one-sided copying of the first document; start input means for instructing the start of a copying operation; and, when one-sided copying of the first original is specified by the mode input means, copying of the start input means In response to the operation start instruction, for the first document, the document supplying means is designated to supply one-sided recording sheet, the recording sheet supplying means is designated to supply the second type of recording sheet, and the recording sheet reversing means is designated to supply one-sided recording sheet. , and for the second and subsequent documents, specify both sides for the document supply means, specify the supply of the first type of recording sheet for the recording sheet supply means, specify both sides for the recording sheet reversing means, When single-sided copying of unfinished originals is specified by the mode input means, originals are supplied from the first sheet to the original immediately before the unfinished original in response to an instruction to start copying from the start input means. Specify both sides for the means, specify the supply of the first type of recording sheet for the recording sheet supply means, specify both sides for the recording sheet reversing means, and specify one side for the document supply means for unfinished originals. A double-sided copying apparatus comprising: a side recording control means for specifying supply of a second type of recording sheet to the sheet supply means and specifying one side to the recording sheet reversing means;