JPH10279099A - Document delivering device - Google Patents

Document delivering device

Info

Publication number
JPH10279099A
JPH10279099A JP8496397A JP8496397A JPH10279099A JP H10279099 A JPH10279099 A JP H10279099A JP 8496397 A JP8496397 A JP 8496397A JP 8496397 A JP8496397 A JP 8496397A JP H10279099 A JPH10279099 A JP H10279099A
Authority
JP
Japan
Prior art keywords
roller
document
retard
paper feed
rotational force
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.)
Granted
Application number
JP8496397A
Other languages
Japanese (ja)
Other versions
JP3750266B2 (en
Inventor
Takao Araki
孝夫 荒木
Katsushi Ichimaru
克司 市丸
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP08496397A priority Critical patent/JP3750266B2/en
Publication of JPH10279099A publication Critical patent/JPH10279099A/en
Application granted granted Critical
Publication of JP3750266B2 publication Critical patent/JP3750266B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Image Input (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a document delivering device capable of feeding compound paper without damaging it. SOLUTION: A document delivering device is provided with a paper feed motor 18 to generate the rotational force in the forward and reverse direction, a paper fed roller 15 to feed a downstream in the carrying direction, a separation roller 16 which is located on the downstream side of the paper feed roller in the carrying direction and feeds the document in the carrying direction, a retard roller 17 which is arranged opposite to the separation roller and returns the document not on the highest stage in the reverse direction to the carrying direction, and a transmission mechanism 20 to transmit the rotational force of the drive source to the paper feed roller, the separation roller 16 and the retard roller 17, and when the document of compound paper is fed, no mechanical switching is necessary, and the paper feed roller 15, the separation roller 16 and the retard roller 17 are rotated in the document carrying direction only by reversing the rotational direction of the paper feed motor 18, and the breakage of the document is avoided.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、原稿を繰出す原稿
繰出装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document feeding device for feeding a document.

【0002】[0002]

【従来の技術】近年、原稿から画像を読取るため、画像
読取装置が広く用いられている。そして、この画像読取
装置には、原稿を画像読取装置に自動給紙するために、
原稿繰出装置が設けられていることが多い。さて原稿に
は、一枚ずつバラバラのものの他、複葉紙もある。複葉
紙とは、複数の用紙の上辺をのり等でとじて構成される
伝票などである。そして、原稿繰出装置を用いて、複葉
紙を原稿読取装置へ給紙し、複葉紙の一番上の面を読み
取るのである。
2. Description of the Related Art In recent years, image reading apparatuses have been widely used for reading an image from a document. And, in order to automatically feed a document to the image reading apparatus,
An original feeding device is often provided. By the way, manuscripts include not only individual ones but also bi-sheets. The bi-sheet is a slip formed by binding the upper sides of a plurality of sheets with glue or the like. Then, using the document feeding device, the multi-sheet paper is fed to the document reading device, and the uppermost surface of the double-sheet paper is read.

【0003】次に、図2、図3を用いて、複葉紙の給紙
に対応した従来の原稿繰出装置について説明する。図2
に示すように、原稿1は、矢印M1方向に回転する給紙
ローラ2に周接して搬送方向Nに送られる。給紙ローラ
2の搬送方向N下流側には、分離ローラ3とリタードロ
ーラ4の対があり、分離ローラ3は、矢印M2方向に回
転して、原稿1を搬送方向Nに送る。これと対をなすリ
タードローラ4は、通常(一枚ずつバラバラの原稿の場
合)実線位置にあって矢印M3方向(搬送方向Nの反対
方向へ戻す向き)に回転し、原稿1のうち、最上段にあ
るもののみを通過させ、それ以外を搬送方向Nの反対方
向へ戻すように動作する。
[0003] Next, a conventional document feeder which supports the feeding of multi-sheets will be described with reference to FIGS. 2 and 3. FIG.
As shown in (1), the document 1 is sent in the transport direction N while being in circumferential contact with the paper feed roller 2 rotating in the direction of the arrow M1. A pair of a separation roller 3 and a retard roller 4 is provided downstream of the sheet feeding roller 2 in the conveyance direction N, and the separation roller 3 rotates in the direction of arrow M2 to feed the document 1 in the conveyance direction N. The pair of retard rollers 4 is normally at the solid line position (in the case of originals scattered one by one) and rotates in the direction of arrow M3 (the direction in which the originals return in the opposite direction to the transport direction N). An operation is performed so that only the upper one is passed, and the others are returned in the direction opposite to the transport direction N.

【0004】しかしながら、複葉紙を繰り出す場合、リ
タードローラ4を通常通り動作させると、複葉紙を構成
する各葉間でズレ運動が発生し、とじしろが破損した
り、折れ曲がってしまうなどのトラブルを生ずる。そこ
で、複葉紙を繰り出す場合には、軸支部6を中心にして
レバー5を矢印N2方向へ揺動させ、レバー5の先端部
で、リタードローラ4を支持し回動中心7aにより回動
する支持部7を、矢印N3方向へ押し下げ、分離ローラ
3とリタードローラ4とを離間させるようにしていた。
これにより、リタードローラ4が、複葉紙(原稿1)に
接触せず、上記トラブルを回避するようにしていた。
[0004] However, in the case of feeding out the multi-sheet paper, if the retard roller 4 is operated as usual, a displacement motion occurs between the respective leaves constituting the bi-sheet paper, thereby causing troubles such as breakage of the binding margin and bending. Occurs. Therefore, when feeding out the bi-sheet paper, the lever 5 is swung in the direction of arrow N2 about the shaft support 6 so that the leading end of the lever 5 supports the retard roller 4 and rotates by the rotation center 7a. The portion 7 is pushed down in the direction of the arrow N3 to separate the separation roller 3 and the retard roller 4 from each other.
As a result, the retard roller 4 does not come into contact with the double-sheet paper (document 1), thereby avoiding the above trouble.

【0005】このほか、図3に示すように、分離ローラ
3が軸着される駆動シャフト8の端部に分離ギア9を固
定し、リタードローラ4が軸着されるリタードシャフト
12の端部にリタードギア11を固定し、分離ギア9と
リタードギア11とを、アイドラ10により、結合する
例もある。この例では、通常(一枚ずつバラバラの原稿
の場合)、アイドラ10を、軸支部14を中心に揺動す
る押付レバー13の先端部により、分離ギア9とリター
ドギア11とに押しつけておき、分離ギア9とリタード
ギア11とを連結している。そして、複葉紙の原稿1を
繰り出す際には、押付レバー13の先端部を矢印N5方
向にあげて、アイドラ10を分離ギア9、リタードギア
11から外し、リタードギア11に回転力が伝達されな
いようにしていた。こうすることにより、リタードロー
ラ4をフリーにして、リタードローラ4を分離ローラ3
につれ周りさせ、上記トラブルを回避するものである。
In addition, as shown in FIG. 3, a separation gear 9 is fixed to an end of a drive shaft 8 on which the separation roller 3 is mounted, and is attached to an end of a retard shaft 12 on which the retard roller 4 is mounted. In some cases, the retard gear 11 is fixed, and the separation gear 9 and the retard gear 11 are connected by the idler 10. In this example, the idler 10 is normally pressed against the separation gear 9 and the retard gear 11 by the distal end of a pressing lever 13 that swings about the shaft support 14 (separate originals are separated one by one). The gear 9 and the retard gear 11 are connected. When feeding out the bi-folded document 1, the tip of the pressing lever 13 is raised in the direction of arrow N5, and the idler 10 is detached from the separation gear 9 and the retard gear 11, so that the torque is not transmitted to the retard gear 11. Was. By doing so, the retard roller 4 is made free, and the retard roller 4 is separated from the separation roller 3.
To avoid the above trouble.

【0006】[0006]

【発明が解決しようとする課題】しかしながら、上述の
いずれの従来技術においても、レバー5や押付レバー1
3というようなメカニカルな切替手段を用いて、一枚ず
つバラバラの原稿の場合と複葉紙の場合とを、機械的動
作に依存して切り替えていた。このようにすると、メカ
ニカルな切替手段のためだけの配置スペースが必要とな
り、こみ入った原稿読取装置内に設けにくいし、メカニ
カルな動作が不完全になりやすく、複葉紙を破損しがち
であるという問題点があった。
However, in any of the above-mentioned prior arts, the lever 5 or the pressing lever 1 is required.
By using a mechanical switching unit such as 3, switching between the case of originals scattered one by one and the case of bi-sheets is performed depending on the mechanical operation. In this case, an arrangement space only for the mechanical switching means is required, and it is difficult to provide the inside of the convolved document reading device, the mechanical operation is likely to be incomplete, and the paper is likely to be damaged. There was a problem.

【0007】そこで本発明は、複葉紙を破損せずに供給
できる原稿繰出装置を提供することを目的とする。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a document feeding device capable of feeding a sheet of paper without damaging it.

【0008】[0008]

【課題を解決するための手段】本発明の原稿繰出装置
は、正逆両方向の回転力を発生する駆動源と、原稿を搬
送方向へ送る給紙ローラと、給紙ローラよりも搬送方向
下流側に位置し原稿を搬送方向へ送る分離ローラと、分
離ローラに対して対をなすように配置され最上段にない
原稿を搬送方向の逆方向に戻すリタードローラと、駆動
源の回転力を給紙ローラ、分離ローラ及びリタードロー
ラに伝達する伝動機構とを備え、伝動機構は、駆動源の
回転力が正方向であるとき、給紙ローラと分離ローラを
原稿を搬送方向へ送る方向へ回転させると共に、リター
ドローラを原稿を搬送方向の逆方向へ戻すように回転さ
せ、駆動源の回転力が逆方向であるとき、給紙ローラと
分離ローラとリタードローラとを原稿を搬送方向へ送る
方向へ回転させるものである。
According to the present invention, there is provided an original feeding device comprising: a driving source for generating a rotational force in both forward and reverse directions; a paper feed roller for feeding an original in the transport direction; and a downstream side in the transport direction from the paper feed roller. , A separation roller that feeds the document in the conveyance direction, a retard roller that is arranged to form a pair with the separation roller, and returns the document that is not at the top in the direction opposite to the conveyance direction, and feeds the rotational force of the drive source. And a transmission mechanism for transmitting to the separation roller and the retard roller.The transmission mechanism rotates the paper feed roller and the separation roller in the direction in which the document is transported in the transport direction when the rotational force of the driving source is in the forward direction. Rotate the retard roller to return the document in the direction opposite to the transport direction.When the rotational force of the drive source is in the opposite direction, rotate the paper feed roller, separation roller, and retard roller in the direction to transport the document in the transport direction. Let me It is.

【0009】また、伝動機構は、駆動源の回転力が正方
向であるとき、給紙ローラと分離ローラを原稿を搬送方
向へ送る方向へ回転させると共に、リタードローラを原
稿を搬送方向の逆方向へ戻すように回転させ、駆動源の
回転力が逆方向であるとき、給紙ローラと分離ローラと
を原稿を搬送方向へ送る方向へ回転させ、リタードロー
ラへの駆動力を遮断する。
When the rotational force of the driving source is in the forward direction, the transmission mechanism rotates the paper feed roller and the separation roller in the direction in which the document is transported in the transport direction, and rotates the retard roller in the direction opposite to the transport direction. When the rotational force of the drive source is in the opposite direction, the paper feed roller and the separation roller are rotated in the direction to feed the document in the transport direction, and the drive force to the retard roller is shut off.

【0010】[0010]

【発明の実施の形態】請求項1記載の原稿繰出装置は、
正逆両方向の回転力を発生する駆動源と、原稿を搬送方
向へ送る給紙ローラと、給紙ローラよりも搬送方向下流
側に位置し原稿を搬送方向へ送る分離ローラと、分離ロ
ーラに対して対をなすように配置され最上段にない原稿
を搬送方向の逆方向に戻すリタードローラと、駆動源の
回転力を給紙ローラ、分離ローラ及びリタードローラに
伝達する伝動機構とを備え、伝動機構は、駆動源の回転
力が正方向であるとき、給紙ローラと分離ローラを原稿
を搬送方向へ送る方向へ回転させると共に、リタードロ
ーラを原稿を搬送方向の逆方向へ戻すように回転させ、
駆動源の回転力が逆方向であるとき、給紙ローラと分離
ローラとリタードローラとを原稿を搬送方向へ送る方向
へ回転させるものである。この構成により、複葉紙の原
稿を給紙する際、駆動源の回転力の方向を切り替えるこ
とのみにより、リタードローラを分離ローラとつれ回り
する方向に回転させることができ、複葉紙の破損などの
トラブルを回避できる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An original feeding device according to a first aspect of the present invention includes:
A drive source that generates rotational force in both the forward and reverse directions, a paper feed roller that feeds the document in the transport direction, a separation roller that is located downstream of the paper feed roller in the transport direction and feeds the document in the transport direction, And a transmission mechanism for transmitting the rotational force of the drive source to the paper feed roller, the separation roller, and the retard roller. When the rotational force of the drive source is in the forward direction, the mechanism rotates the paper feed roller and the separation roller in a direction in which the document is transported in the transport direction, and rotates the retard roller to return the document in the reverse direction of the transport direction. ,
When the rotational force of the drive source is in the opposite direction, the paper feed roller, the separation roller, and the retard roller are rotated in the direction in which the document is sent in the transport direction. With this configuration, when feeding a multi-sheet document, the retard roller can be rotated in the direction in which it rotates with the separation roller only by switching the direction of the rotational force of the driving source, and damage to the multi-sheet paper, etc. Trouble can be avoided.

【0011】請求項2記載の原稿繰出装置は、正逆両方
向の回転力を発生する駆動源と、原稿を搬送方向へ送る
給紙ローラと、給紙ローラよりも搬送方向下流側に位置
し原稿を搬送方向へ送る分離ローラと、分離ローラに対
して対をなすように配置され最上段にない原稿を搬送方
向の逆方向に戻すリタードローラと、駆動源の回転力を
給紙ローラ、分離ローラ及びリタードローラに伝達する
伝動機構とを備え、伝動機構は、駆動源の回転力が正方
向であるとき、給紙ローラと分離ローラを原稿を搬送方
向へ送る方向へ回転させると共に、リタードローラを原
稿を搬送方向の逆方向へ戻すように回転させ、駆動源の
回転力が逆方向であるとき、給紙ローラと分離ローラと
を原稿を搬送方向へ送る方向へ回転させ、リタードロー
ラへの駆動力を遮断する。この構成により、複葉紙の原
稿を給紙する際、駆動源の回転力の方向を切り替えるこ
とのみにより、リタードローラをフリーにして、分離ロ
ーラにつれ周りさせることができ、複葉紙の破損などの
トラブルを回避できる。
According to a second aspect of the present invention, there is provided an original feeding device which generates a rotational force in both forward and reverse directions, a paper feed roller for feeding the original in the transport direction, and a document located downstream of the paper feed roller in the transport direction. Roller that feeds paper in the conveying direction, a retard roller that is arranged in pairs with the separating roller, and returns the original that is not at the top in the reverse direction of the conveying direction, a paper feed roller, and a separating roller that supplies the rotational force of the drive source And a transmission mechanism for transmitting to the retard roller.When the rotational force of the drive source is in the forward direction, the transmission mechanism rotates the paper feed roller and the separation roller in the direction in which the document is transported in the transport direction, and causes the retard roller to rotate. The document is rotated to return in the reverse direction of the transport direction, and when the rotational force of the drive source is in the opposite direction, the paper feed roller and the separation roller are rotated in the direction in which the document is transported in the transport direction, and the drive to the retard roller is performed. Block power To. With this configuration, when feeding a multi-sheet document, the retard roller can be freed and swung around the separation roller only by switching the direction of the rotational force of the drive source. Can be avoided.

【0012】次に図面を参照しながら、本発明の実施の
形態について説明する。ここで、図1は、本発明の一実
施の形態における原稿繰出装置の斜視図である。図1に
示すように、この原稿繰出装置は、正逆両方向の回転力
を発生する駆動源としての給紙モータ18と、給紙モー
タ18の回転力の方向を制御する制御部Cと、原稿を搬
送方向Nに送る給紙ローラ15と、給紙ローラ15より
も搬送方向N下流側に位置し原稿を搬送方向Nへ送る分
離ローラ16と、分離ローラ16に対して対をなすよう
に配置され最上段にない原稿を搬送方向Nの逆方向に戻
すとともに、トルクリミッタ17aを内蔵するリタード
ローラ17と、給紙モータ18の回転力を、給紙ローラ
15、分離ローラ16、リタードローラ17に伝達する
伝動機構20とを有する。
Next, an embodiment of the present invention will be described with reference to the drawings. Here, FIG. 1 is a perspective view of a document feeding device according to an embodiment of the present invention. As shown in FIG. 1, the document feeder includes a paper feed motor 18 as a drive source for generating a rotational force in both forward and reverse directions, a control unit C for controlling the direction of the rotational force of the paper feed motor 18, Roller 15 that feeds the document in the transport direction N, a separation roller 16 that is located downstream of the paper feed roller 15 in the transport direction N, and feeds the document in the transport direction N, and is arranged to form a pair with the separation roller 16. The document not at the uppermost stage is returned in the direction opposite to the transport direction N, and the rotational force of the retard roller 17 including the torque limiter 17a and the feed motor 18 is applied to the feed roller 15, the separation roller 16, and the retard roller 17. And a transmission mechanism 20 for transmitting.

【0013】次に、伝動機構20の詳細を説明する。1
9は給紙モータ18の出力軸である。この出力軸19に
軸着されるモータギア21は、出力軸19の回転方向
(実線矢印は正転、破線矢印は逆転である)と同方向に
回転する。モータギア21には、第1ギア22が噛合
し、第1ギア22は、フレーム24に回転自在に軸支さ
れる第1シャフト23に軸着されている。
Next, details of the transmission mechanism 20 will be described. 1
Reference numeral 9 denotes an output shaft of the sheet feeding motor 18. The motor gear 21 mounted on the output shaft 19 rotates in the same direction as the rotation direction of the output shaft 19 (the solid arrow indicates forward rotation, and the broken arrow indicates reverse rotation). A first gear 22 meshes with the motor gear 21, and the first gear 22 is mounted on a first shaft 23 rotatably supported by a frame 24.

【0014】また、第1シャフト23のうち、第1ギア
22から離れた位置には、第2ギア25が軸着されてい
る。そして、第1ギア22には、第4ギア28と第5ギ
ア29の二つの歯車が噛合している。さらに、第5ギア
29は、第6ギア30と噛合している。
A second gear 25 is axially mounted on the first shaft 23 at a position away from the first gear 22. The first gear 22 is meshed with two gears, a fourth gear 28 and a fifth gear 29. Further, the fifth gear 29 is in mesh with the sixth gear 30.

【0015】この第4ギア28と第6ギア30とは、同
一の中継シャフト31に軸支されているのであるが、第
4ギア28と第6ギア30とは、それぞれワンウエイク
ラッチ32、33を内蔵しており、中継シャフト31
は、出力軸19が正転するとき、第6ギア30がワンウ
エイクラッチ33により空転し、第4ギア28を経由し
て第1ギア22の回転力が伝達され、矢印M4方向に回
転する。また、中継シャフト31は、出力軸19が逆転
するとき、第4ギア28がワンウエイクラッチ32によ
り空転し、第5ギア29と第6ギア30を経由して第1
ギア22の回転力が伝達され、矢印M4方向に回転す
る。即ち、中継シャフト31は、出力軸19の回転方向
が正逆のいずれであっても、矢印M4方向に回転するよ
うになっている。
The fourth gear 28 and the sixth gear 30 are pivotally supported by the same relay shaft 31, but the fourth gear 28 and the sixth gear 30 are connected to the one-way clutches 32 and 33, respectively. Built-in, relay shaft 31
When the output shaft 19 rotates forward, the sixth gear 30 is idled by the one-way clutch 33, the rotational force of the first gear 22 is transmitted via the fourth gear 28, and the sixth gear 30 rotates in the direction of arrow M4. Also, when the output shaft 19 rotates in the reverse direction, the fourth gear 28 idles by the one-way clutch 32, and the relay shaft 31 passes through the fifth gear 29 and the sixth gear 30 to the first gear 28.
The rotational force of the gear 22 is transmitted, and the gear 22 rotates in the direction of arrow M4. That is, the relay shaft 31 rotates in the direction of the arrow M4 regardless of whether the rotation direction of the output shaft 19 is normal or reverse.

【0016】さらに、中継シャフト31は、分離ローラ
16を保持する分離シャフト34に対して、プーリ3
5、36、ベルト37によって連結され、分離ローラ1
6は、中継シャフト31とともに、出力軸19の回転方
向の如何にかかわらず、原稿を搬送方向N方向へ送るよ
うに回転する。同様に、給紙ローラ15を保持する給紙
シャフト38は、分離シャフト34に対して、プーリ3
9、40、ベルト41によって連結され、給紙ローラ1
5は、分離ローラ16とともに、出力軸19の回転方向
の如何にかかわらず、原稿を搬送方向N方向へ送るよう
に回転する。
Further, the relay shaft 31 is connected to the pulley 3 with respect to the separation shaft 34 holding the separation roller 16.
5, 36 and the belt 37, and the separation roller 1
6 rotates together with the relay shaft 31 so as to feed the document in the transport direction N regardless of the rotation direction of the output shaft 19. Similarly, the feed shaft 38 holding the feed roller 15 is connected to the pulley 3 with respect to the separation shaft 34.
9, 40, and the paper feed roller 1
Reference numeral 5 rotates together with the separation roller 16 so as to feed the document in the transport direction N regardless of the rotation direction of the output shaft 19.

【0017】また、第2ギア25には、リタードシャフ
ト27の端部に軸着される第3ギア26が噛合し、リタ
ードシャフト27には、リタードローラ17が保持され
ている。したがって、リタードローラ17は、出力軸1
9が正転すると、原稿を搬送方向Nの反対方向へ戻す向
きに回転し、出力軸19が逆転すると、原稿を搬送方向
Nへ送る向きに回転する。
The second gear 25 meshes with a third gear 26 which is pivotally mounted on the end of a retard shaft 27. The retard shaft 27 holds a retard roller 17. Therefore, the retard roller 17 is connected to the output shaft 1.
When the document 9 rotates forward, the document rotates in a direction to return the document in the direction opposite to the transport direction N. When the output shaft 19 rotates in the reverse direction, the document rotates in a direction to transport the document in the transport direction N.

【0018】次に、本形態の原稿繰出装置の動作につい
て説明する。まず、複葉紙でない通常の原稿を給紙する
際には、制御部Cが給紙モータ18の回転方向を正転に
設定する。このため、給紙ローラ15と分離ローラ16
とは、原稿を搬送方向Nに送るように回転し、リタード
ローラ17は、原稿を搬送方向Nの逆向きに戻すように
回転する。
Next, the operation of the document feeding device of the present embodiment will be described. First, when feeding a normal original that is not a multi-sheet paper, the control unit C sets the rotation direction of the feed motor 18 to normal rotation. Therefore, the feed roller 15 and the separation roller 16
Means that the document is rotated in the transport direction N, and the retard roller 17 rotates to return the document in the reverse direction of the transport direction N.

【0019】一方、複葉紙の原稿を給紙する際には、制
御部Cが給紙モータ18の回転方向を逆転に設定する。
このため、給紙ローラ15と分離ローラ16とリタード
ローラ17とは、原稿を搬送方向Nに送るように回転
し、複葉紙の破損などのトラブルが回避される。ここ
で、複葉紙に対応するには、単に給紙モータ18の回転
方向を切り替えさせすれば良く、そのためだけにメカニ
カルな機構を追加する必要はない。このため、メカニカ
ルな機構のための配置スペースは不要であり、しかも、
電気的な切替により確実に複葉紙に対応することができ
る。
On the other hand, when feeding a multi-sheet document, the control unit C sets the rotation direction of the feed motor 18 to reverse.
For this reason, the paper feed roller 15, the separation roller 16, and the retard roller 17 rotate so as to feed the document in the transport direction N, thereby avoiding troubles such as breakage of the bisheet. Here, in order to cope with bi-sheet paper, it is only necessary to switch the rotation direction of the paper feed motor 18, and it is not necessary to add a mechanical mechanism only for that purpose. For this reason, there is no need for an arrangement space for a mechanical mechanism, and
The electric switching can reliably cope with bi-sheet paper.

【0020】なお、複葉紙を送る際に、リタードローラ
17の駆動を解除するには、例えば、リタードシャフト
27と第3ギア26との間に、実線矢印の向きの回転の
みを伝えるワンウエイクラッチを設けるなどすればよ
い。
In order to release the drive of the retard roller 17 when feeding the bi-sheet, for example, a one-way clutch for transmitting only the rotation in the direction of the solid line arrow is provided between the retard shaft 27 and the third gear 26. It may be provided.

【0021】[0021]

【発明の効果】本発明によれば、トラブルを生ずること
なく、確実に複葉紙を給紙でき、しかも複葉紙に対応す
るための特別の配置スペースが不要である。
According to the present invention, a bi-sheet can be fed without any trouble and a special arrangement space for the bi-sheet is not required.

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

【図1】本発明の一実施の形態における原稿繰出装置の
斜視図
FIG. 1 is a perspective view of a document feeding device according to an embodiment of the present invention.

【図2】従来の原稿繰出装置の断面図FIG. 2 is a cross-sectional view of a conventional document feeding device.

【図3】従来の原稿繰出装置の斜視図FIG. 3 is a perspective view of a conventional document feeding device.

【符号の説明】[Explanation of symbols]

15 給紙ローラ 16 分離ローラ 17 リタードローラ 18 給紙モータ 20 伝動機構 15 Paper feed roller 16 Separation roller 17 Retard roller 18 Paper feed motor 20 Transmission mechanism

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】正逆両方向の回転力を発生する駆動源と、
原稿を搬送方向へ送る給紙ローラと、前記給紙ローラよ
りも搬送方向下流側に位置し原稿を搬送方向へ送る分離
ローラと、前記分離ローラに対して対をなすように配置
され最上段にない原稿を搬送方向の逆方向に戻すリター
ドローラと、前記駆動源の回転力を前記給紙ローラ、前
記分離ローラ及び前記リタードローラに伝達する伝動機
構とを備え、 前記伝動機構は、前記駆動源の回転力が正方向であると
き、前記給紙ローラと前記分離ローラを原稿を搬送方向
へ送る方向へ回転させると共に、前記リタードローラを
原稿を搬送方向の逆方向へ戻すように回転させ、前記駆
動源の回転力が逆方向であるとき、前記給紙ローラと前
記分離ローラと前記リタードローラとを原稿を搬送方向
へ送る方向へ回転させることを特徴とする原稿繰出装
置。
A driving source for generating a rotational force in both forward and reverse directions;
A feed roller that feeds the document in the feed direction, a separation roller that is located downstream of the feed roller in the feed direction and feeds the document in the feed direction, A retard roller for returning a document that is not present in a direction opposite to the transport direction, and a transmission mechanism for transmitting the rotational force of the drive source to the paper feed roller, the separation roller, and the retard roller, wherein the transmission mechanism includes the drive source When the rotational force is in the forward direction, the paper feed roller and the separation roller are rotated in the direction in which the document is transported in the transport direction, and the retard roller is rotated to return the document in the reverse direction of the transport direction. An original feeding device, wherein when the rotational force of the driving source is in the opposite direction, the paper feed roller, the separation roller, and the retard roller are rotated in a direction in which the original is transported in the transport direction.
【請求項2】正逆両方向の回転力を発生する駆動源と、
原稿を搬送方向へ送る給紙ローラと、前記給紙ローラよ
りも搬送方向下流側に位置し原稿を搬送方向へ送る分離
ローラと、前記分離ローラに対して対をなすように配置
され最上段にない原稿を搬送方向の逆方向に戻すリター
ドローラと、前記駆動源の回転力を前記給紙ローラ、前
記分離ローラ及び前記リタードローラに伝達する伝動機
構とを備え、 前記伝動機構は、前記駆動源の回転力が正方向であると
き、前記給紙ローラと前記分離ローラを原稿を搬送方向
へ送る方向へ回転させると共に、前記リタードローラを
原稿を搬送方向の逆方向へ戻すように回転させ、前記駆
動源の回転力が逆方向であるとき、前記給紙ローラと前
記分離ローラとを原稿を搬送方向へ送る方向へ回転さ
せ、前記リタードローラへの駆動力を遮断することを特
徴とする原稿繰出装置。
2. A drive source for generating rotational force in both forward and reverse directions;
A feed roller that feeds the document in the feed direction, a separation roller that is located downstream of the feed roller in the feed direction and feeds the document in the feed direction, A retard roller for returning a document that is not present in a direction opposite to the transport direction, and a transmission mechanism for transmitting the rotational force of the drive source to the paper feed roller, the separation roller, and the retard roller, wherein the transmission mechanism includes the drive source When the rotational force is in the forward direction, the paper feed roller and the separation roller are rotated in the direction in which the document is transported in the transport direction, and the retard roller is rotated to return the document in the reverse direction of the transport direction. When the rotational force of the drive source is in the opposite direction, the paper feed roller and the separation roller are rotated in a direction to feed the document in the transport direction, and the drive force to the retard roller is shut off. Document feeding device.
JP08496397A 1997-04-03 1997-04-03 Document feeding device Expired - Fee Related JP3750266B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08496397A JP3750266B2 (en) 1997-04-03 1997-04-03 Document feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08496397A JP3750266B2 (en) 1997-04-03 1997-04-03 Document feeding device

Publications (2)

Publication Number Publication Date
JPH10279099A true JPH10279099A (en) 1998-10-20
JP3750266B2 JP3750266B2 (en) 2006-03-01

Family

ID=13845293

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08496397A Expired - Fee Related JP3750266B2 (en) 1997-04-03 1997-04-03 Document feeding device

Country Status (1)

Country Link
JP (1) JP3750266B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112645090A (en) * 2019-10-09 2021-04-13 京瓷办公信息***株式会社 Document feeding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112645090A (en) * 2019-10-09 2021-04-13 京瓷办公信息***株式会社 Document feeding device

Also Published As

Publication number Publication date
JP3750266B2 (en) 2006-03-01

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