JPH062550B2 - Automatic document feeder - Google Patents

Automatic document feeder

Info

Publication number
JPH062550B2
JPH062550B2 JP60211620A JP21162085A JPH062550B2 JP H062550 B2 JPH062550 B2 JP H062550B2 JP 60211620 A JP60211620 A JP 60211620A JP 21162085 A JP21162085 A JP 21162085A JP H062550 B2 JPH062550 B2 JP H062550B2
Authority
JP
Japan
Prior art keywords
document
original
path
conveyed
exposure
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.)
Expired - Lifetime
Application number
JP60211620A
Other languages
Japanese (ja)
Other versions
JPS6270125A (en
Inventor
進 奥井
悦一 前川
次夫 平林
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP60211620A priority Critical patent/JPH062550B2/en
Publication of JPS6270125A publication Critical patent/JPS6270125A/en
Publication of JPH062550B2 publication Critical patent/JPH062550B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Conveyance By Endless Belt Conveyors (AREA)
  • Registering Or Overturning Sheets (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、電子写真複写機等の記録装置に付加して使用
される自動原稿搬送装置に関する。
The present invention relates to an automatic document feeder used in addition to a recording device such as an electrophotographic copying machine.

〔従来の技術〕[Conventional technology]

記録装置に対し、複写せんとする原稿を能率的にかつ無
人状態でも供給できる装置としては、自動化された原稿
搬送装置(ADF)が既に提供されているが、従来は主
に原稿の片面のみ複写を行うものに機能が限定されてい
た。
An automatic document feeder (ADF) has already been provided as a device capable of efficiently supplying a document to be copied to a recording device even in an unmanned state. However, conventionally, mainly one side of the document is copied. Functions were limited to those that do.

一方では、最近記録紙の表裏に連続して複写することの
出来る記録装置の開発によって両面原稿の複写が可能な
ADFの必要性が高まりつつあり、ADF内における原
稿の表裏反転の機構として多くの考案がなされている。
それらに関しては、特開昭59-216159号公報、特開昭53-
112738号公報、実開昭59-4548号公報、特開昭60-8834号
公報、特開昭60-26559号公報等の提案がある。
On the other hand, recently, the need for an ADF capable of copying double-sided originals has been increasing due to the development of a recording apparatus capable of continuously copying on the front and back sides of a recording paper. It has been devised.
Regarding these, JP-A-59-216159 and JP-A-53-216159
There are proposals such as Japanese Patent No. 112738, Japanese Utility Model Laid-Open No. 59-4548, Japanese Patent Laid-Open No. 60-8834 and Japanese Patent Laid-Open No. 60-26559.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

一般に、それら多くの自動原稿搬送装置においては原稿
の両面を連続してコピーする方法がとられているため、
第1面の露光を終えた原稿を原稿反転部に搬入し、表裏
を反転した状態で再びプラテンガラス上に搬送して第2
面の露光を行うようなプロセスがとられている。
Generally, in many of these automatic document feeders, a method of continuously copying both sides of a document is used.
The original on which the first side has been exposed is carried into the original reversing section, and is conveyed again on the platen glass in a state where the front and back are reversed to the second
The process is such that the surface is exposed.

従ってプラテンガラスの上面に設けられ、原稿を該プラ
テンガラス上の所定位置に搬送する作用と同時に露光の
際のブラテンカバーを兼ねている搬送ベルトには、前述
したプロセスのために搬送方向の切換と停止の動作が必
要となり、それらの動作は露光のタイミングや原稿の搬
送位置に同期して制御されるものとなっている。
Therefore, the conveyor belt, which is provided on the upper surface of the platen glass and serves to convey the document to a predetermined position on the platen glass and also serves as the platen cover at the time of exposure, changes the conveying direction for the above-mentioned process. And stop operations are required, and these operations are controlled in synchronization with the timing of exposure and the document conveyance position.

このような搬送ベルトの制御のために原稿反転部には通
常複数個所に原稿の搬送状況を検知するための検出部を
設けなければならないとされているが、この検出部に用
いられるセンサそのものが高価なものであるばかりでな
く、各センサ毎に独立した情報伝達系路や動作の制御系
路、又検出部を設けるための空間を必要とするため装置
の構造が複雑化し高価格となる傾向があった。
In order to control such a conveyor belt, it is usually required that the document reversing section be provided with detection sections for detecting the document conveyance status at a plurality of places, but the sensor itself used for this detection section is Not only is it expensive, but it also requires an independent information transmission path for each sensor, a control path for operation, and a space for installing a detection unit, so the structure of the device is complicated and the price tends to be high. was there.

〔問題点を解決するための手段〕[Means for solving problems]

本発明はこの点を解決して改良した結果なされたもの
で、原稿給紙皿から一枚宛の原稿を搬出し、U字状の原
稿搬送路に沿って搬送し、更に前記U字状の原稿搬送路
に隣接する露光位置であるプラテンガラス上に搬送ベル
トにより搬送し、第1面の露光を終えた原稿を前記搬送
ベルトにより逆送し、原稿表裏反転部を通って再度プラ
テンガラス上に搬送し、第2面の露光を行う自動原稿搬
送装置において、前記原稿表裏反転部は一方向へのみ原
稿搬送がなされる循環経路を有し、該循環経路の原稿搬
送方向下流側部分は前記U字状の原稿搬送路の原稿搬送
方向下流側部分と経路を共通とし、該共通した経路には
1個の原稿検出部を設け、前記原稿検出部から出力され
る信号により前記搬送ベルトの、前記第1面露光及び前
記第2面露光のための駆動の制御を行うことを特徴とす
る自動原稿搬送装置を提供するものである。
The present invention has been made as a result of solving this problem and improving it. A document addressed to one sheet is unloaded from the document feed tray and is transported along a U-shaped document transport path. The original is conveyed by a conveyor belt onto the platen glass, which is an exposure position adjacent to the original conveying path, and the original on which the exposure of the first surface is finished is fed back by the conveyor belt, and passes through the original front / back reversing section and is again on the platen glass. In an automatic document feeder that conveys and exposes the second side, the document front / back reversing unit has a circulation path in which a document is conveyed only in one direction, and a downstream side portion of the circulation path in the document conveyance direction is the U A path is shared with a downstream side portion of the character-shaped document transport path in the document transport direction, and one document detection unit is provided in the common route, and a signal output from the document detection unit causes the transport belt For the first surface exposure and the second surface exposure There is provided an automatic document feeder, characterized in that for controlling the drive.

〔実施例〕〔Example〕

本発明の実施例を第1図に示す。 An embodiment of the present invention is shown in FIG.

図は記録装置本体10を二点鎖線をもって正面視した状態
にて示している。装置本体10の上面には、一点鎖線にて
輪郭部を示した本発明の自動原稿搬送装置(以下ADF
と称す)20が蝶番等による支持によって例えば奥側に開
放出来る構造にて載置されているが、図示の状態は、前
記ADF20は手前側に倒されて原稿搬送ベルト30が装置
本体10の上部に設けられたプラテンガラス11を圧着した
状況となっている。
The drawing shows the recording apparatus main body 10 in a state of being viewed from the front by a two-dot chain line. On the upper surface of the apparatus body 10, an automatic document feeder of the present invention (hereinafter referred to as ADF) whose outline is shown by a dashed line
20) is mounted by a hinge or the like so that it can be opened to the rear side, for example, but in the state shown in the figure, the ADF 20 is tilted to the front side, and the document conveying belt 30 is placed above the apparatus main body 10. The platen glass 11 provided in the above has been pressed.

すなわち前記ADF20は以下説明する搬送機構により原
稿の自動送りを可能とするものであるが、また手動によ
ってADF20の全体を開閉することにより通常のプラテ
ンカバーとしての機能をも併せて有している。
That is, the ADF 20 is capable of automatically feeding a document by the transport mechanism described below, but also has a function as a normal platen cover by manually opening and closing the entire ADF 20.

本発明の実施例において、ADF20の上部には原稿給紙
皿40があって、原稿Dを積み重ねるようになっており、
コピー釦を押すと複写機内の制御手段を介して、ADF
20内のモータによって各搬送機構が作動し、まず送り出
しローラ21が原稿Dの先端部最上面を自重によって圧接
した後矢示方向に回転を初めて最上部の第1面を上面と
した原稿Dをガイド板24aに沿って送り出す。
In the embodiment of the present invention, a document feed tray 40 is provided above the ADF 20 for stacking documents D.
When the copy button is pressed, the ADF is sent via the control means in the copier.
Each transport mechanism is actuated by the motors in 20. First, the feed roller 21 presses the uppermost surface of the leading end portion of the document D by its own weight, and then rotates in the direction of the arrow for the first time to load the document D with the uppermost first surface as the upper surface. It is sent out along the guide plate 24a.

続いて原稿Dは、さばきベルト22aとさばきローラ22b
によってしごかれて最上部の一枚だけがガイド板24bに
沿って進み、その先端が矢示方向に回転する給紙ローラ
23aに達したのちセンサAの検知信号によって前記送り
出しローラ21への動力伝達を断ち、その回転をフリーの
状態とする。
Then, the document D is divided into a separating belt 22a and a separating roller 22b.
Paper feed roller that is squeezed by one and only the uppermost one advances along the guide plate 24b, and its tip rotates in the arrow direction.
After reaching 23a, the power transmission to the delivery roller 21 is stopped by the detection signal of the sensor A, and the rotation thereof is set to a free state.

前記給紙ローラ23aによって搬送されるようになった原
稿Dは、U字状のガイド部25内を搬送され、後述するガ
イド部25a内に設けたフォトセンサ126を通過し、原稿
Dは表裏が反転した状態となってガイド部25aの出口に
設けた遮蔽部材27を原稿Dの先端で排除して時計方向に
回転するベルト駆動ローラ28aと従動ローラ28bの間に
張架された前記搬送ベルト30に達し、その摩擦力によっ
て搬送が継続される。
The document D, which has been conveyed by the paper feed roller 23a, is conveyed in the U-shaped guide portion 25, passes through a photo sensor 126 provided in the guide portion 25a described later, and the document D is In the inverted state, the shielding member 27 provided at the exit of the guide portion 25a is removed at the leading edge of the document D, and the conveyor belt 30 is stretched between the belt driving roller 28a and the driven roller 28b that rotate clockwise. Is reached and the conveyance is continued by the frictional force.

搬送ベルト30によってプラテンガラス11上を左方向に滑
って搬送された原稿Dは、その左端部がプラテンガラス
11の左側縁部に設けた原稿ストッパ部材12に当接して停
止すると搬送ベルト30が原稿D上を滑って空転するが、
その直後に、前述したセンサ126による原稿Dの先端を
検知してより所定時間遅延して制御部から出された信号
によって前記ベルト駆動ローラ28aの回転を一旦停止す
るようになっている。すなわち原稿Dがフォトセンサ12
6に検知されてから原稿ストッパ部材に到達する迄に要
する時間より所定時間だけ遅れてベルト駆動ローラ28a
が停止することとなる。
The document D, which is conveyed by sliding to the left on the platen glass 11 by the conveying belt 30, has the left end portion thereof at the platen glass.
When the conveyance belt 30 slips on the document D and slips when it comes into contact with the document stopper member 12 provided on the left side edge of the document 11 and stops,
Immediately after that, the leading edge of the document D is detected by the above-described sensor 126, and the rotation of the belt drive roller 28a is once stopped by a signal output from the control section after a predetermined delay. That is, the document D is the photo sensor 12
The belt drive roller 28a is delayed by a predetermined time from the time required for reaching the document stopper member after being detected by 6
Will be stopped.

なお、原稿ストッパ部材は、必ずしも記録装置本体側に
設置される必要はなく、ADF側に設置されていてもよ
い。
The document stopper member does not necessarily have to be installed on the recording apparatus main body side, but may be installed on the ADF side.

この状態にて原稿Dは複数個の従動回転する圧接ローラ
29の自重を受けた搬送ベルト30によってプラテンガラス
11上に圧接されて停止と同時に記録装置本体10において
第1面露光が開始され、そのあと周知のプロセスを経て
画像の形成と記録紙への転写を行って片面の複写を終了
する。
In this state, the document D has a plurality of pressure-contact rollers that are driven to rotate.
Platen glass by the conveyor belt 30 receiving the weight of 29
The first surface exposure is started in the recording apparatus main body 10 at the same time when the first surface is pressed against 11 and stops, and thereafter, the image formation and the transfer to the recording paper are performed through a well-known process to complete the one-sided copying.

さらにADF20においては、前記プラテンガラス11の右
方に一対の薄い金属板あるいは樹脂板等をもって形成し
た反転経路によって原稿Dの表裏反転を行うための原稿
反転部25bを設けていてその一端が前述したガイド部25
aの中間位置に開口して接続し他端が前記プラテンガラ
ス11の右側縁部に開口するよう構成している。
Further, the ADF 20 is provided on the right side of the platen glass 11 with a document reversing portion 25b for reversing the front and back of the document D by a reversing path formed by a pair of thin metal plates or resin plates, one end of which is described above. Guide part 25
It is configured such that it is opened and connected to the intermediate position of a and the other end is opened to the right edge of the platen glass 11.

前記反転部25bの要所には矢示方向に回転する搬送ロー
ラ群23b,23c,23dが配設されており、前述したプロ
セスにより第1面の露光を終えた原稿Dは、露光終了に
同期してベルト駆動ローラ28aが反時計方向に回転を始
めるので搬送ベルト30によってプラテンガラス11上を右
方向に搬送される。
Conveyor roller groups 23b, 23c, and 23d that rotate in the direction of the arrow are provided at important points of the reversing unit 25b. The document D whose first surface has been exposed by the above-described process is synchronized with the end of exposure. Then, the belt driving roller 28a starts rotating in the counterclockwise direction, so that the conveyor belt 30 conveys the belt driving roller 28a to the right on the platen glass 11.

搬送された原稿Dの右端部は、遮蔽部材27により閉塞さ
れているため前記ガイド部25aには入らず従って前記反
転部25bに送り込まれることになる。
Since the right end portion of the conveyed document D is blocked by the shielding member 27, it does not enter the guide portion 25a and is therefore sent to the reversing portion 25b.

本発明は、前記ガイド部25aと前記反転部25bの合流す
る共通の搬送経路内にフォトセンサ126を配置したもの
で、原稿Dは搬送ローラ23d,23c,23bの順に反転部
25b内を反時計方向に周回したのち、原稿Dの右端部す
なわちこの場合の先端部は共通の搬送経路内に入り、前
記のフォトセンサ126の光ビームを通過し、再び前記遮
蔽部材27を排除してプラテンガラス11上に送り出される
が、フォトセンサ126による原稿Dの先端部検知の信号
に基いて前記ベルト駆動ローラ28aの回転を再び時計方
向に切換えて搬送ベルト30を時計方向に回転させ第2面
を下向きとした原稿Dを、再び原稿ストッパ部材12に当
接する迄搬送するようになっている。
According to the present invention, the photo sensor 126 is arranged in a common conveying path where the guide portion 25a and the reversing portion 25b meet, and the document D is reversed in the conveying rollers 23d, 23c and 23b in this order.
After circling counterclockwise in 25b, the right end portion of the document D, that is, the front end portion in this case, enters the common conveyance path, passes the light beam of the photo sensor 126, and eliminates the shielding member 27 again. Then, the belt driving roller 28a is rotated again in the clockwise direction on the basis of the signal for detecting the leading edge of the document D by the photo sensor 126 to rotate the conveyor belt 30 in the clockwise direction. A document D having its two sides facing downward is conveyed until it comes into contact with the document stopper member 12 again.

また、前記フォトセンサ126が原稿Dの先端部を検知し
た信号によって作用を始める第1のタイマが設けられて
いて、該タイマの作用により原稿Dが原稿ストッパ部材
12に達したあと搬送ベルトが停止し、原稿Dが静止され
るようになっている。
Further, there is provided a first timer which starts its action by a signal when the photo sensor 126 detects the leading edge of the document D, and the action of the timer causes the document D to be a document stopper member.
After reaching 12, the conveyance belt is stopped and the document D is kept stationary.

一方この間にあって装置本体10では片面コピーを終えた
記録紙が定着を終えて表裏反転され、裏面の転写が出来
る態勢におかれており、前述したベルト駆動ローラ28a
の停止に続き装置本体10内では原稿Dの裏面すなわち第
2面の露光、画像形成、転写が行われる。
On the other hand, in the meantime, in the apparatus main body 10, the recording paper which has been subjected to the one-sided copying is fixed and is turned over so that the back side can be transferred.
Subsequent to the stop, the rear surface of the document D, that is, the second surface, is exposed, image-formed, and transferred in the apparatus main body 10.

次いで原稿Dの第2面の露光が終了すると、前述した第
1のタイマ同様フォトセンサ126の原稿の先端部を検知
した信号によって作用を始めた第2のタイマの作動によ
り前記原稿ストッパ部材12が下方に退避すると同時に前
記搬送ベルト30が再び時計方向に回転を始め、原稿Dを
左方向に搬送してADF20の外部に備えた原稿排紙皿50
に送り出しコピーの反復に伴って原稿Dを順次積層させ
て行く。
Then, when the exposure of the second surface of the original document D is completed, the original document stopper member 12 is activated by the operation of the second timer which started its action by the signal of the photo sensor 126 detecting the leading edge of the original document as in the case of the first timer. At the same time as the conveyor belt 30 is retracted downward, the conveyor belt 30 starts to rotate clockwise again, conveys the original document D to the left, and the original document ejection tray 50 provided outside the ADF 20.
Then, the originals D are sequentially stacked as the copying operation is repeated.

なお、原稿Dの後端部が原稿ストッパ部材12を通過した
後に原稿ストッパ部材12が図示位置に復帰し、かつベル
ト駆動ローラ28aの時計方向の回転が停止されてADF
20の作動サイクルを当初の状態に復し、続く原稿Dの搬
送が自動的に開始されるよう制御される構造となってい
る。
It should be noted that after the rear end portion of the document D has passed the document stopper member 12, the document stopper member 12 is returned to the position shown in the figure, and the belt drive roller 28a is stopped from rotating in the clockwise direction to cause the ADF.
The structure is such that the 20 operation cycles are restored to the initial state and the conveyance of the subsequent document D is automatically started.

すなわち本発明の自動原稿送装置では第1図に示す如
く、前記ガイド部25aと前記反転部25bの合流する搬送
経路内にフォトセンサ126を配置したものであって、こ
の場合該フォトセンサ126は、原稿Dが前記ガイド部25
aを経て第1面の露光のため搬送される時と、第1面の
露光を終えて前記反転部25bを経て第2面の露光を受け
るべく再び前記ガイド部25aを通過する時の2回にわた
って原稿Dの先端部を検出することとなり、その結果フ
ォトセンサ126は第2図のタイムチャートに明らかな如
く1個のセンサで第1面露光時の搬送ベルト30、さらに
第2面露光時の搬送ベルト30の停止制御も可能となる。
That is, in the automatic document feeder of the present invention, as shown in FIG. 1, the photo sensor 126 is arranged in the conveying path where the guide portion 25a and the reversing portion 25b meet. In this case, the photo sensor 126 is , The document D is the guide portion 25
Two times: when the sheet is conveyed for exposure of the first surface via a and when it passes through the guide portion 25a again to receive the exposure of the second surface after finishing the exposure of the first surface. As a result, the photo sensor 126 detects the leading edge of the document D over the entire length of the original D, and as a result, the photo sensor 126 is a single sensor as shown in the time chart of FIG. It is also possible to control the stop of the conveyor belt 30.

なお本発明においては、原稿Dを反転部により再度表裏
反転してそのまま露光部を通して排出し、ADFの給紙
時と同ページに揃えることが可能である。原稿Dを排出
しながら次の原稿の搬送を開始し原稿Dの後端がストッ
パーを通過した後ストッパーは復帰し次の原稿を規定位
置に停止させることも可能である。
In the present invention, it is possible to reverse the front and back sides of the document D again by the reversing unit, discharge the document D as it is through the exposure unit, and align it on the same page as when the ADF is fed. It is also possible to start the conveyance of the next document while discharging the document D, and after the trailing edge of the document D has passed the stopper, the stopper is restored and the next document is stopped at the specified position.

また使用するセンサは、フォトセンサに限らずマイクロ
スイッチ、その他のセンサを使用することが可能であ
る。
Further, the sensor used is not limited to the photo sensor, and a micro switch or another sensor can be used.

〔発明の効果〕〔The invention's effect〕

本発明は、両面原稿を、その表裏を連続して複写するに
必要な各搬送部材の始動、停止および正逆転の切換を、
ガイド部と反転部との合流する搬送路内に設置した1個
の検出部材による原稿の検出信号によって制御すること
が可能としたもので、それによって高価な検出部材が最
小限で済み、またそれに伴って信号、制御系の配線も簡
単となり安価で故障の少ない自動原稿搬送装置が提供さ
れることとなった。
According to the present invention, the start, stop, and forward / reverse switching of each conveying member required for continuously copying the front and back sides of a double-sided original are performed.
It is possible to control by the detection signal of the document by one detection member installed in the conveying path where the guide unit and the reversing unit meet, which minimizes the expensive detection member, and As a result, the wiring of signals and control system is simplified, and an inexpensive automatic document feeder having less troubles is provided.

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

第1図は本発明の自動原稿搬送装置の断面構成図。第2
図は前記装置における原稿搬送機能制御のタイムチャー
ト。 10…記録装置本体、11…プラテンガラス 12…原稿ストッパ部材 20…原稿搬送装置(ADF) 21…送り出しローラ、22a…さばきベルト 23a…給紙ローラ、23b〜23d…搬送ローラ 25a…ガイド部、25b…(原稿)反転部 126…フォトセンサ 27…遮蔽部材、28a…ベルト駆動ローラ 29…圧接ローラ、30…搬送ベルト 40…原稿給紙皿、50…原稿排紙皿 D…原稿
FIG. 1 is a sectional view of the automatic document feeder of the present invention. Second
The figure is a time chart of the document conveyance function control in the apparatus. 10 ... Recording apparatus main body, 11 ... Platen glass 12 ... Original document stopper member 20 ... Original document feeder (ADF) 21 ... Sending roller, 22a ... Separation belt 23a ... Paper feeding roller, 23b to 23d ... Conveying roller 25a ... Guide part, 25b ... (original) reversing section 126 ... Photo sensor 27 ... Shielding member, 28a ... Belt driving roller 29 ... Pressing roller, 30 ... Conveying belt 40 ... Original feeding tray, 50 ... Original discharging tray D ... Original

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】原稿給紙皿(40)から一枚宛の原稿を搬出
し、U字状の原稿搬送路(25a)に沿って搬送し、更に
前記U字状の原稿搬送路(25a)に隣接する露光位置で
あるプラテンガラス(11)上に搬送ベルト(30)により
搬送し、第1面の露光を終えた原稿を前記搬送ベルト
(30)により逆送し、原稿表裏反転部(25b)を通って
再度プラテンガラス(11)上に搬送し、第2面の露光を
行う自動原稿搬送装置において、 前記原稿表裏反転部(25b)は一方向へのみ原稿搬送が
なされる循環経路を有し、 該循環経路の原稿搬送方向下流側部分は前記U字状の原
稿搬送路(25a)の原稿搬送方向下流側部分と経路を共
通とし、 該共通とした経路には1個の原稿検出部(126)を設
け、前記原稿検出部(126)から出力される信号により
前記搬送ベルト(30)の、前記第1面露光及び前記第2
面露光のための駆動の制御を行うことを特徴とする自動
原稿搬送装置。
1. A document addressed to one sheet is unloaded from a document feed tray (40) and is transported along a U-shaped document transport path (25a), and further the U-shaped document transport path (25a). Is conveyed by the conveyor belt (30) onto the platen glass (11), which is an exposure position adjacent to the sheet, and the original having the first surface exposed is fed back by the conveyor belt (30) to the original front / back reversing section (25b). ), The document is conveyed again onto the platen glass (11) and the second surface is exposed. In the document original reversing section (25b), there is a circulation path in which the document is conveyed only in one direction. However, the downstream side portion of the circulation path in the original conveyance direction has a common path with the downstream side portion of the U-shaped original conveyance path (25a) in the original conveyance direction, and one original detection section is provided in the common path. (126) is provided, and by the signal output from the document detecting section (126), Serial first surface exposure and the second
An automatic document feeder which controls driving for surface exposure.
JP60211620A 1985-09-24 1985-09-24 Automatic document feeder Expired - Lifetime JPH062550B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60211620A JPH062550B2 (en) 1985-09-24 1985-09-24 Automatic document feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60211620A JPH062550B2 (en) 1985-09-24 1985-09-24 Automatic document feeder

Publications (2)

Publication Number Publication Date
JPS6270125A JPS6270125A (en) 1987-03-31
JPH062550B2 true JPH062550B2 (en) 1994-01-12

Family

ID=16608779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60211620A Expired - Lifetime JPH062550B2 (en) 1985-09-24 1985-09-24 Automatic document feeder

Country Status (1)

Country Link
JP (1) JPH062550B2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0777954B2 (en) * 1985-09-05 1995-08-23 ニスカ株式会社 Circulating document feeder

Also Published As

Publication number Publication date
JPS6270125A (en) 1987-03-31

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