JPS61262755A - Automatic both-surface copying machine - Google Patents

Automatic both-surface copying machine

Info

Publication number
JPS61262755A
JPS61262755A JP10625485A JP10625485A JPS61262755A JP S61262755 A JPS61262755 A JP S61262755A JP 10625485 A JP10625485 A JP 10625485A JP 10625485 A JP10625485 A JP 10625485A JP S61262755 A JPS61262755 A JP S61262755A
Authority
JP
Japan
Prior art keywords
original
paper
copying
document
intermediate tray
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10625485A
Other languages
Japanese (ja)
Inventor
Shoichiro Yoshiura
昭一郎 吉浦
Haruyoshi Ikeda
池田 春義
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP10625485A priority Critical patent/JPS61262755A/en
Publication of JPS61262755A publication Critical patent/JPS61262755A/en
Pending legal-status Critical Current

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  • Counters In Electrophotography And Two-Sided Copying (AREA)

Abstract

PURPOSE:To prevent an original from being miscopied and to improve the operation efficiency of a copying machine by providing a detecting means for the paper size of the original and a form rotation indicating means which makes a display for urging an operator to turn a top-surface copied form by 180 deg. horizontally before the start of reverse-surface copying operation. CONSTITUTION:When the original is placed on an original tray, the paper size is detected by an original detection sensor 41 and when a both-surface copy mode is set, an advance to n7 is made to decide the size of the original detected by an original detection sensor 41. Then, a form changeover claw 25, an in-sorter form conveyor belt 18, a switch-back roller 17, etc., are so controlled as to suit to both-surface copying operation. Copying operation regarding a top surface is performed, a copying form after top-surface copying operation is stacked in an intermediate tray 22, and then the original is conveyed to an original platen 11 for the reverse-surface copying. Only when the contents of a memory area M are retrieved and it is decided that the paper size of the original is not suitable to the both-surface copying operation, the operator is urged to turn the top-surface copied form by 180 deg. in the intermediate tray 22, and the copying form is thus turned over to invert the image copied on the surface upside down.

Description

【発明の詳細な説明】 く技術分野〉 この発明は、片面複写済み用紙を反転搬送路に導き、搬
送方向を反転して再度複写プロセス部に搬送して用紙の
両面に画像を形成する自動両面複写機に関する。
[Detailed Description of the Invention] [Technical Field] This invention is an automatic duplex system in which a single-sided copy sheet is guided to a reversing conveyance path, the conveyance direction is reversed, and the sheet is conveyed again to a copying process section to form images on both sides of the sheet. Regarding copying machines.

〈発明の概要〉 この発明に係る自動両面複写機は、原稿の紙サイズを検
出する手段と、原稿の紙サイズが両面複写モードに適合
するか否かを判別する手段と、中間トレイに貯溜された
表面複写済み用紙を水平に180°回動するよう促す表
示手段とを備え、両面複写モード時に原稿の載置方向が
不適合である場合に中間トレイ内の表面複写済み用紙の
回動を促し、複写用紙の搬送方向を180°回転するも
のである。
<Summary of the Invention> The automatic duplex copying machine according to the present invention includes a means for detecting the paper size of an original, a means for determining whether the paper size of the original is compatible with the duplex copying mode, and a display means for prompting the paper with the front side copied to be rotated horizontally by 180°, which prompts the rotation of the paper with the front side copied in the intermediate tray when the loading direction of the original is inappropriate in the duplex copying mode, The conveyance direction of the copy paper is rotated by 180 degrees.

〈従来技術とその欠点〉 自動両面複写機は、用紙給紙部から複写プロセス部を経
由して排紙部に至る通常の用紙搬送路の他に、排紙部か
ら複写プロセス部に連続する副搬送路が構成されている
。この副搬送路に反転搬送路と中間トレイとを備え、両
面複写モード時には片面複写済み用紙を反転搬送路に導
き、搬送方向を反転して中間トレイに一旦貯溜する。設
定枚数骨の片面複写済み用紙を中間トレイに貯溜した後
、原稿台上の原稿が裏面用原稿に変更された際に、中間
トレイに貯溜した片面複写済み用紙を再度複写プロセス
部に搬送する。反転搬送路において搬送方向を反転する
ことにより、中間トレイから複写プロセス部に搬送した
片面複写済み用紙の画像を形成されていない裏面が感光
体表面に対向し、用紙両面に画像を形成することができ
る。以上の動作によって両面複写動作時には第4図(A
)に示すように用紙前端部Fから複写プロセス部に搬送
された複写用紙51は複写工程終了後、スイッチバック
搬送路で搬送方向を反転され、中間トレイに貯溜される
。この時、複写用紙51は第4図(B)に示すように表
面51aを上方にして貯ゝ溜されている。裏面複写動作
開始時には用紙後端部B側から複写プロセス部に搬送さ
れ、同図(C)に示すように表裏面を反転され、同図(
D)のように用紙裏面51bを上方にして用紙後端部B
側から複写プロセス部に導かれる。したがって用紙裏面
51bには同図(E)に示す状態で画像が形成される。
<Prior art and its drawbacks> In addition to the normal paper conveyance path from the paper feed section to the copy process section to the paper output section, an automatic duplex copying machine has a secondary paper path that continues from the paper discharge section to the copy process section. A conveyance path is configured. This sub-conveyance path is provided with a reversal conveyance path and an intermediate tray, and in the double-sided copying mode, a single-sided copy sheet is guided to the reversal conveyance path, the conveyance direction is reversed, and the sheet is temporarily stored in the intermediate tray. After a set number of single-sided copied sheets are stored in an intermediate tray, when the original on the document table is changed to a back-side original, the single-sided copied sheets stored in the intermediate tray are conveyed to the copying process section again. By reversing the conveying direction in the reversing conveyance path, the back side of the single-sided copied sheet conveyed from the intermediate tray to the copying process section, on which no image is formed, faces the surface of the photoreceptor, making it possible to form images on both sides of the sheet. can. With the above operations, when double-sided copying is performed, Figure 4 (A)
As shown in ), after the copying process is completed, the copy paper 51 that has been transported from the paper front end F to the copy process section is reversed in the transport direction on the switchback transport path and stored in the intermediate tray. At this time, the copy paper 51 is stored with its surface 51a facing upward, as shown in FIG. 4(B). When the reverse side copying operation starts, the paper is conveyed from the trailing edge B side to the copying process section, and the front and back sides are reversed as shown in Figure (C).
D) As shown in FIG.
It is led from the side to the copying process section. Therefore, an image is formed on the back surface 51b of the paper in the state shown in FIG.

このため、複写用紙51の用紙表面51aにはF側を上
方にして画像が形成され、用紙裏面51bにはB側を上
方にして画像が形成されてしまう。即ち、画像の上下方
向を用紙搬送方向に一致して原稿が載置した場合には複
写用紙の表裏面で画像の上下が反対になってしまう。一
般に文書を画像とする原稿はその長手方向が画像の上下
方向になっている。したがって長手方向を用紙搬送方向
に一致させて原稿が載置された場合には両面複写動作を
終了した用紙の表裏面において画像の上下が反対になる
。例えば第5図に示すようにA3、B4、A4R,B5
R,A4、B5の各サイズの用紙を載置可能な原稿台1
1aでは、A3、B4、A4RおよびB5Rのサイズの
原稿が載置された場合には複写用紙の表裏面において画
像の上下が反対になる。これを防止するためにはA4R
およびB5Rのサイズでは載置方向をA4およびB5方
向にし、またはA4. B4. A4RおよびB5Rの
サイズの原稿では表面原稿と裏面原稿とで原稿の載置方
向を180°回転させ、画像の上下を反対にする必要が
ある。このため、両面複写動作が煩雑になる欠点があっ
た。また、自動原稿送り装置を備えたものでは原稿トレ
イに原稿を載置する前に原稿の画像方向の変更を行う必
要があり、更にオペレータが画像の上下方向を考慮せず
に原稿を載置した場合にはミスコピーを発生し、稼働効
率が著しく低下する欠点があった〈発明の目的〉 この発明の目的は上記従来の欠点に鑑み、両面複写動作
時の表面複写動作と裏面複写動作において画像の上下が
反対になることに起因する原稿載置作業の煩雑化および
ミスコピーの発生を防止しミ稼働効率を向上することが
できる自動両面複写機を′提供することにある。
Therefore, an image is formed on the front surface 51a of the copy paper 51 with the F side facing upward, and an image is formed on the back surface 51b of the paper with the B side facing upward. That is, if a document is placed with the top and bottom of the image aligned with the paper conveyance direction, the top and bottom of the image will be reversed on the front and back sides of the copy paper. In general, the longitudinal direction of a document containing a document as an image is the vertical direction of the image. Therefore, if a document is placed with its longitudinal direction aligned with the paper conveyance direction, the top and bottom of the image will be reversed on the front and back sides of the paper after the duplex copying operation has been completed. For example, as shown in Figure 5, A3, B4, A4R, B5
Document table 1 that can hold R, A4, and B5 size paper
In 1a, when originals of A3, B4, A4R, and B5R sizes are placed, the top and bottom of the images are reversed on the front and back sides of the copy paper. To prevent this, A4R
and B5R size, the mounting direction is A4 and B5 direction, or A4. B4. For A4R and B5R size originals, it is necessary to rotate the document placement direction by 180 degrees for the front side original and the back side original, and to reverse the top and bottom of the image. Therefore, there is a drawback that the double-sided copying operation becomes complicated. In addition, with automatic document feeders, it is necessary to change the image direction of the document before placing the document on the document tray, and furthermore, the operator may place the document without considering the vertical direction of the image. Objects of the Invention In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to improve the image quality in the front side copying operation and the back side copying operation during double-sided copying operation. An object of the present invention is to provide an automatic double-sided copying machine that can prevent the complication of document placement work and the occurrence of erroneous copies due to the upside down of the originals, and can improve the operational efficiency.

〈発明の構成および効果〉 この発明の自動両面複写機は、原稿の紙サイズを検出す
る検知手段と、この検知手段が検出した紙サイズが両面
複写モードに適合するか否かを判別する判別手段と、こ
の判別手段が不敵台と判別した際には、表面複写動作終
了後、裏面複写動作開始前に中間トレイに貯溜した表面
複写済み用紙を水平に180°回動するように促す表示
を行う表面複写済み用紙回動指示手段とを備えたことを
特徴とする。
<Configuration and Effects of the Invention> The automatic duplex copying machine of the present invention includes a detection means for detecting the paper size of a document, and a determination means for determining whether the paper size detected by the detection means is compatible with the duplex copying mode. When this discrimination means determines that the paper is Futekidai, after the front side copying operation is completed and before the back side copying operation is started, a display prompting the user to horizontally rotate the front side copied paper stored in the intermediate tray by 180 degrees is displayed. The present invention is characterized by comprising a rotation instruction means for a sheet whose front side has been copied.

上述の構成によりこの発明によれば、原稿トレイもしく
は原稿台に載置された原稿のサイズを検知手段により検
出し、その紙サイズが両面複写モードに適合するか否か
を判別し、原稿の紙サイズが両面複写モードに不適合で
ある場合、即ち両面複写動作終了後複写用紙の表裏面で
原稿の上下が異なる場合に裏面複写動作開始前に表面複
写動作を終了した複写用紙を中間トレイにおいて180
°回動するようにオペレータに促すことができる。これ
により裏面複写動作時に複写用紙の上下位置を反対にす
ることができ、その表裏面において画像の上下を一致す
ることができる。したがって原稿の載置方向を変更しな
い場合は自動両面複写動作を行うこ゛とができなかった
サイズの原稿についても両面複写動作を行うことができ
、ミスコピーの発生を防止して複写機の稼働効率を向上
することができる。
According to the present invention with the above-described configuration, the size of the original placed on the original tray or the original table is detected by the detection means, it is determined whether the paper size is compatible with the double-sided copying mode, and the paper size of the original is detected. If the size is incompatible with the duplex copying mode, that is, if the top and bottom of the original are different on the front and back sides of the copy paper after the duplex copying operation is completed, the copy paper on which the front side copying operation has been completed is placed in the intermediate tray 180 before starting the back copying operation.
°The operator can be prompted to rotate. As a result, the top and bottom positions of the copy sheet can be reversed during the back side copying operation, and the top and bottom of the image can be made to match on the front and back sides. Therefore, it is possible to perform double-sided copying even for originals of a size that would not be possible to perform automatic double-sided copying if the loading direction of the original is not changed, thereby preventing the occurrence of copy mistakes and increasing the operating efficiency of the copying machine. can be improved.

〈実施例〉 (a)構造説明 第2図は、この発明の実施例である自動両面複写機の概
略構造を示す正面断面図である。
<Embodiment> (a) Structure description FIG. 2 is a front sectional view showing the schematic structure of an automatic double-sided copying machine which is an embodiment of the present invention.

キャビネット3上に載置された複写機本体2の上面の原
稿台11の上方には原稿循環送り装置lが配設されてい
る。複写機本体2およびキャビネット3の左側面にはソ
ータ15が装着されてい、る。複写機本体2の内部には
感光体ドラム19が配設され、複写プロセス部を構成し
ている。複写機本体2の右側面には用紙カセット20が
装着されており、用紙カセット20と感光体ドラム19
との間にPSローラ21が配設されている。感光体ドラ
ム19の左側には用紙搬送ベルト12、定着ロニラ13
および用紙排紙ローラ14が配設され、複写機内用紙搬
送路31を構成している。
A document circulation feeding device 1 is disposed above the document table 11 on the top surface of the copying machine main body 2 placed on the cabinet 3 . A sorter 15 is attached to the left side of the copying machine body 2 and the cabinet 3. A photosensitive drum 19 is disposed inside the copying machine main body 2 and constitutes a copying process section. A paper cassette 20 is installed on the right side of the copying machine main body 2, and the paper cassette 20 and the photosensitive drum 19 are connected to each other.
A PS roller 21 is disposed between the two. On the left side of the photosensitive drum 19 are a paper conveying belt 12 and a fixing roller 13.
and paper ejection rollers 14 are disposed, forming a paper conveyance path 31 within the copying machine.

原稿循環送り装置1の内部には原稿給紙ベルト5、原稿
給紙ローラ6、原稿排出ローラ7a、7bおよび原稿切
り替え爪8が配設されている。原稿給紙ベルト5と原稿
給紙ローラ6との間には原稿トレイ4が装着されている
。原稿トレイ4には載置された原稿の紙サイズおよび載
置方向を検出する原稿検知センサ41が配設されている
。この検知センサ41がこの発明の検知手段である。原
稿トレイ4に原稿9が配置され、その最下部に位置する
ものから順に給紙される。複写機本体2の上面の原稿台
11の上方には原稿搬送ベルト10が配設されており、
原稿給紙ベルト5および原稿給紙ローラ6により原稿給
送搬送路36を経由して給紙された原稿9を原稿台11
の所定の位置に搬送する。原稿9を原稿トレイ4から給
紙する際には原稿切り替え爪8は同図に示す状態に位置
し原稿給送搬送路36を開放している。原稿台上の原稿
を回収する場合には原稿切り替え爪8は下方に揺動し、
原稿回収搬送路37を開放する。搬送ベルト10は正逆
両方向に回動可能にされており、原稿を原稿台上に給送
するとともに、原稿台上の原稿を原稿トレイ4に載置さ
れた原稿の上方に排出する。
Inside the document circulation feeding device 1, a document feed belt 5, a document feed roller 6, document ejection rollers 7a, 7b, and a document switching claw 8 are arranged. A document tray 4 is installed between a document feed belt 5 and a document feed roller 6. A document detection sensor 41 is disposed on the document tray 4 to detect the paper size and placement direction of the document placed thereon. This detection sensor 41 is the detection means of this invention. Originals 9 are placed on the original tray 4, and are fed in order from the lowest one. A document transport belt 10 is disposed above the document table 11 on the top surface of the copying machine main body 2.
The original 9 fed via the original feeding conveyance path 36 by the original feeding belt 5 and the original feeding roller 6 is transferred to the original table 11.
transport it to a predetermined position. When feeding the original 9 from the original tray 4, the original switching claw 8 is positioned in the state shown in the figure, and the original feeding conveyance path 36 is opened. When collecting the original on the original platen, the original switching claw 8 swings downward,
The document recovery conveyance path 37 is opened. The conveyor belt 10 is rotatable in both forward and reverse directions, and feeds the original onto the original table and discharges the original on the original table above the original placed on the original tray 4.

第3図は、上記自動両面複写機の操作部の一部を示す平
面図である。
FIG. 3 is a plan view showing a part of the operating section of the automatic double-sided copying machine.

操作部51の一部には自動両面複写動作に係る奇数キー
53aおよび偶数キー53bからなる両面モードキー5
3が配設されている。原稿循環送り装置lの原稿トレイ
4に載置された原稿が奇数枚である場合には奇数キー5
3aを、偶数枚である場合には偶数キー53b−t−操
作し、それぞれに応じた複写動作を設定する。両面複写
モードキー53の上方には裏面コピー中表示器54が配
設されている。この裏面コピー中表示器54は裏面複写
動作時にオペレータに動作中であることを示すものであ
る。その上方には用紙回動指示器52が配設されている
。この用紙回動指示器52がこの発明の表面複写済み用
紙回動指示手段である。
A part of the operation unit 51 includes a duplex mode key 5 consisting of an odd number key 53a and an even number key 53b related to automatic duplex copying operation.
3 are arranged. If the number of originals placed on the original tray 4 of the original circulation feeder l is an odd number, press the odd number key 5.
3a, and when the number of copies is an even number, the even number keys 53b-t- are operated to set the corresponding copying operation. A backside copying indicator 54 is provided above the double-sided copying mode key 53. This back side copying indicator 54 indicates to the operator that the back side copying operation is in progress. A paper rotation indicator 52 is arranged above it. This paper rotation indicator 52 is a front side copy paper rotation instruction means of the present invention.

(b)動作説明 第1図(A)および(B)は、上記自動両面複写機の動
作を示すフローチャートである。
(b) Description of Operation FIGS. 1A and 1B are flowcharts showing the operation of the automatic double-sided copying machine.

電源がオンされると、ステップnl(以下ステップni
を単にniという。)において制御部を構成する図外の
メモリに設定された両面複写モードのメモリエリアMの
内容をOにする。次いで原稿トレイに原稿が載置される
と、n2でその紙サイズを原稿検知センサ41により検
出する。n3でオペレータのキー操作により複写動作に
係るデータの入力および複写モードの設定が行われると
、n4で両面複写モードが設定されたか否かを判別する
。n4において両面複写モードが設定されなかった場合
にはn5に進み、プリントスイッチが操作されるとn6
で複写動作を行う。n4において両面複写モードを設定
された際にはn7に進み、原稿検知センサ41が検出し
た原稿のサイズがA3サイズであるか否かを判別する。
When the power is turned on, step nl (hereinafter step ni)
is simply called ni. ), the contents of the memory area M for the double-sided copy mode set in the memory (not shown) constituting the control section are set to O. Next, when a document is placed on the document tray, the document size is detected by the document detection sensor 41 at n2. When the operator inputs data related to a copying operation and sets a copy mode by operating keys at n3, it is determined at n4 whether or not a double-sided copy mode has been set. If the double-sided copy mode is not set in n4, the process advances to n5, and if the print switch is operated, the process advances to n6.
Perform the copy operation. When the double-sided copy mode is set in n4, the process proceeds to n7, and it is determined whether the size of the document detected by the document detection sensor 41 is A3 size.

n7において原稿のサイズがA3でない場合にはn8に
進み、B4サイズであるか否かを判別する。n8におい
てB4でない場合にはn9でA4R即ちA4サイズの用
紙の長手方向の給紙である否かを判別する。n9におい
てA4Rでない場合にはnlOでB5Rのサイズである
が否かを判別する。n10においてB5Rでない場合に
はn12に進み、両面複写モードに係る動作の制御を行
う。n7〜nloのいずれかにおいて載置された原稿が
A4、B4、A4RまたはB5Rのいずれがであった場
合にはnilに進み、前記メモリエリアMの内容を1に
してn12に進む。n12で用紙切り替え爪25、ソー
タ内用紙搬送ベルト18、スイッチバックローラ17等
の動作を両面複写動作に適応するよう制御する。この後
n13に進み、原稿を原稿トレイ4から原稿台11に搬
送し、n14で給紙部の用紙カセット20から複写用紙
を複写プロセス部に給紙し、n15’7’表面原稿に係
る複写動作を行う。表面複写動作を終了した複写用紙は
n16で中間トレイ22に貯溜される。この後n17で
メモリエリアMの内容が1であ、るか否かを判別し、1
でない場合即ちnilの動作を行わなかった場合にはn
19に進み、裏面用の原稿を原稿台11に搬送する。
If the size of the document is not A3 in n7, the process proceeds to n8, and it is determined whether the document is B4 size or not. If the paper is not B4 at n8, it is determined at n9 whether or not A4R, that is, A4 size paper is being fed in the longitudinal direction. If the size is not A4R at n9, it is determined whether the size is B5R at nlO. If it is not B5R at n10, the process proceeds to n12, where operations related to the double-sided copy mode are controlled. If the document placed in any one of n7 to nlo is A4, B4, A4R, or B5R, the process proceeds to nil, sets the contents of the memory area M to 1, and proceeds to n12. At n12, the operations of the paper switching claw 25, the paper conveyance belt 18 in the sorter, the switchback roller 17, etc. are controlled to adapt to the double-sided copying operation. After this, the process proceeds to n13, where the original is conveyed from the original tray 4 to the original table 11, and at n14, copy paper is fed from the paper cassette 20 of the paper feeding unit to the copy process unit, and n15'7' Copying operation related to the front side original I do. The copy paper on which the front side copying operation has been completed is stored in the intermediate tray 22 at n16. After this, in n17, it is determined whether the content of the memory area M is 1 or not, and
If not, that is, if no nil action was performed, n
The process advances to step 19, and the document for the back side is conveyed to the document table 11.

n17においてMの内容が1がである場合にはn18で
用紙回動指示器52をオンし、オペレータに中間トレイ
22に貯溜されている表面複写済み用紙の回転を促す。
If the content of M is 1 at n17, the paper rotation indicator 52 is turned on at n18 to prompt the operator to rotate the paper whose front side has been copied stored in the intermediate tray 22.

n19で原稿がセットされた後n20で中間トレイ22
における用紙の回転動作が終了するとn21に進み、中
間トレイ22から表面複写済み用紙を給紙し、n22で
裏面原稿に係る複写動作を行い、この裏面複写動作を終
了した用紙をn23でソータ15に排出する。上記動作
においてn2がこの発明の検知手段に対応し、n7〜n
loが同じく判別手段に対応し、n18が同じく表面複
写済み用紙回動指示手段に対応する。
After the original is set in n19, the intermediate tray 22 is placed in n20.
When the rotation of the paper is completed, the process proceeds to n21, where the front side copy paper is fed from the intermediate tray 22, the copying operation for the back side original is performed at n22, and the paper that has undergone the back side copying operation is transferred to the sorter 15 at n23. Discharge. In the above operation, n2 corresponds to the detection means of the present invention, and n7 to n
Similarly, lo corresponds to the determination means, and n18 similarly corresponds to the front side copy completed paper rotation instruction means.

n7〜nilの動作により原稿の紙サイズが両面複写動
作に適合するか否かを判別し、原稿サイズがA3、B4
、A4RおよびB5Rのいずれかであり、自動両面複写
動作に不適合である場合にはnilでメモリエリアMの
内容を1にする。n7〜n10においてA3、B4、A
4RまたはB5Rのいずれでもない場合にはメモリエリ
アMの内容はnlにおいてOにされたままで以下の動作
に進む。n17においてメモリエリアMの内容が1であ
るか否かを検索することにより原稿の紙サイズが両面複
写動作に不適合である場合のみ中間トレイ22において
表面複写済み用紙を180゜回転するように促し、複写
用紙を回転して表面に複写されている画像の上下を反転
することができる。
The operation of n7 to nil determines whether the paper size of the original is suitable for double-sided copying operation, and if the original size is A3 or B4.
, A4R, or B5R, and if it is incompatible with automatic double-sided copying operation, the contents of the memory area M are set to 1 with nil. A3, B4, A in n7 to n10
If it is neither 4R nor B5R, the contents of memory area M remain O in nl and the process proceeds to the following operation. In n17, by searching whether the content of the memory area M is 1 or not, only when the paper size of the original is incompatible with double-sided copying operation, prompts the intermediate tray 22 to rotate the paper with the front side copied by 180 degrees, By rotating the copy paper, the image copied on the front surface can be flipped upside down.

(C1他の対応 n17において原稿のサイズが両面複写動作に不適合で
あると判断した際にはn18で用紙回動指示器52をオ
ンし、n19で原稿がセットされた後n20の用紙回転
動作の終了の判別動作を省略することも可能である。こ
のようにすることにより画像の上下方向が原稿の短辺方
向に一致する原稿の両面複写動作時に中間トレイにおけ
る表面複写済み用紙の回転によって表裏面の画像の上下
が反対になることを防止できる。
(C1 and other measures When it is determined in n17 that the size of the original is not suitable for double-sided copying operation, the paper rotation indicator 52 is turned on in n18, and after the original is set in n19, the paper rotation operation in n20 is started. It is also possible to omit the end determination operation.By doing this, when double-sided copying is performed for a document in which the vertical direction of the image coincides with the short side direction of the document, the front and back sides can be copied by rotating the sheet with the front side copied in the intermediate tray. It is possible to prevent the image from being upside down.

【図面の簡単な説明】[Brief explanation of drawings]

第1図(A)および(B)はこの発明の実施例である自
動両面複写機の動作を示すフローチャート、第2図は同
自動両面複写機の概略構造を示す正面断面図、第3図は
同自動両面複写機の操作部の一部を示す平面図、第4図
は自動両面複写動作における画像の形成状態を示す図、
第5図は原稿のサイズを示す原稿台の平面図である。 22−中間トレイ、 41−原稿検知センサ、52−用紙回動指示器。
1A and 1B are flowcharts showing the operation of an automatic double-sided copying machine according to an embodiment of the present invention, FIG. 2 is a front cross-sectional view showing the schematic structure of the automatic double-sided copying machine, and FIG. A plan view showing a part of the operation section of the automatic double-sided copying machine, FIG. 4 is a diagram showing the state of image formation in automatic double-sided copying operation,
FIG. 5 is a plan view of the document table showing the size of the document. 22-intermediate tray, 41-document detection sensor, 52-paper rotation indicator.

Claims (1)

【特許請求の範囲】[Claims] (1)用紙排紙部と複写プロセス部との間に、反転搬送
路と中間トレイとを有する副搬送路を構成し、両面複写
モード時に表面複写済み用紙を反転搬送路に導き、搬送
方向を反転して中間トレイに貯溜し、原稿台上に裏面用
原稿が載置されたのち中間トレイに貯溜した用紙を再度
複写プロセス部に搬送する自動両面複写機において、 原稿の紙サイズを検出する検知手段と、この検知手段が
検出した紙サイズが両面複写モードに適合するか否かを
判別する判別手段と、この判別手段が不適合と判別した
際に、表面複写動作終了後、裏面複写動作開始前に中間
トレイに貯溜した表面複写済み用紙を水平に180°回
動するよう促す表示を行う表面複写済み用紙回動指示手
段と、を備えてなる自動両面複写機。
(1) A sub-conveyance path having a reversal conveyance path and an intermediate tray is configured between the paper discharge section and the copying process section, and in duplex copying mode, the paper with the front side copied is guided to the reversal conveyance path, and the conveyance direction is controlled. Detection that detects the paper size of the original in an automatic duplex copying machine that reverses the paper and stores it in the intermediate tray, places the back side original on the document table, and then transports the stored paper in the intermediate tray again to the copying process section. a determining means for determining whether or not the paper size detected by the detecting means is compatible with the double-sided copying mode; an automatic double-sided copying machine comprising: a front side copy paper rotation instruction means for displaying a prompt to horizontally rotate the front side copy paper stored in an intermediate tray by 180 degrees;
JP10625485A 1985-05-17 1985-05-17 Automatic both-surface copying machine Pending JPS61262755A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10625485A JPS61262755A (en) 1985-05-17 1985-05-17 Automatic both-surface copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10625485A JPS61262755A (en) 1985-05-17 1985-05-17 Automatic both-surface copying machine

Publications (1)

Publication Number Publication Date
JPS61262755A true JPS61262755A (en) 1986-11-20

Family

ID=14428964

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10625485A Pending JPS61262755A (en) 1985-05-17 1985-05-17 Automatic both-surface copying machine

Country Status (1)

Country Link
JP (1) JPS61262755A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5600429A (en) * 1992-02-24 1997-02-04 Canon Kabushiki Kaisha Image copying apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5600429A (en) * 1992-02-24 1997-02-04 Canon Kabushiki Kaisha Image copying apparatus

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