JP2504161Y2 - Paper transport mechanism - Google Patents
Paper transport mechanismInfo
- Publication number
- JP2504161Y2 JP2504161Y2 JP1989126620U JP12662089U JP2504161Y2 JP 2504161 Y2 JP2504161 Y2 JP 2504161Y2 JP 1989126620 U JP1989126620 U JP 1989126620U JP 12662089 U JP12662089 U JP 12662089U JP 2504161 Y2 JP2504161 Y2 JP 2504161Y2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- shaft
- roller
- paper
- transport mechanism
- 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
Links
Landscapes
- Handling Of Sheets (AREA)
- Handling Of Cut Paper (AREA)
- Handling Of Continuous Sheets Of Paper (AREA)
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Facsimiles In General (AREA)
Description
【考案の詳細な説明】 「産業上の利用分野」 本考案はイメージスキャナ、複写機、ファクシミリ等
に装着される自動原稿送り装着、若しくはプリンタ等に
装着される記録紙給送装置等に用いられる紙搬送機構に
係り、特に給紙側において給紙トレー側に積載された原
稿や記録紙を繰込みローラその他の給送ローラに接離さ
せながら間欠搬送を可能にした紙搬送機構に関する。DETAILED DESCRIPTION OF THE INVENTION "Industrial application field" The present invention is used for an automatic document feeder mounted on an image scanner, a copying machine, a facsimile, etc., or a recording paper feeder mounted on a printer, etc. The present invention relates to a paper transport mechanism, and more particularly, to a paper transport mechanism capable of intermittently transporting a document or recording paper stacked on a paper feed tray side on a paper feed side while contacting and separating it from a feeding roller and other feeding rollers.
「従来の技術」 従来より上面の原稿載置台上に原稿を載置した後、該
原稿載置台下方に配した光学的読取り部を副走査方向に
移動させながら前記原稿の画像読取りを行うようにした
イメージスキャナ、複写機、ファクシミリ等の光学的読
取装置においては多数枚の原稿を読取る場合の原稿交換
の煩雑さを避ける為に、前記原稿載置台上に自動原稿送
り装置を装着し、前記装置本体側の光学的読取り部を原
稿読取り台下方に位置固定させた状態で、原稿送り装置
側の給紙トレー上に積載した原稿を分離給送機構と搬送
及び案内ローラ等を利用して順次原稿読取り位置に原稿
を導きながら光学的読取りを行った後、該光学的読取り
後の原稿を排紙ローラを利用して排紙トレー上に回収す
るように構成している。[Prior Art] Conventionally, an original is placed on an original placing table on the upper surface, and then an image is read from the original while moving an optical reading unit arranged below the original placing table in the sub-scanning direction. In an optical reading device such as an image scanner, a copying machine, or a facsimile, an automatic document feeder is mounted on the document mounting table in order to avoid complication of document replacement when reading a large number of documents. With the optical reading unit on the main unit side fixed under the document reading table, the documents stacked on the paper feed tray on the document feeder side are sequentially scanned using the separating / feeding mechanism, conveyance, and guide rollers. The optical reading is performed while guiding the original to the reading position, and then the original after the optical reading is collected on a paper discharge tray by using a paper discharge roller.
そして前記分離給送機構は、例えば第４図に示すよう
に駆動ローラとして作用する繰り込みローラ11、該繰り
込みローラ11に接離自在に構成された加圧板12、不図示
のトルクリミッタ機構により制動力を付勢しながら該繰
り込みローラ11に従動して回転する阻止ローラ13からな
り、前記加圧板12により給紙トレー14上に積載した原稿
を繰り込みローラ11に圧接しながら該繰り込みローラ11
の回転力により、前記阻止ローラ13に導き、該阻止ロー
ラ13で重合して給送された原稿を一枚づつ分離して送り
ローラ16側に導くように構成している。The separating / feeding mechanism includes, for example, as shown in FIG. 4, a retracting roller 11 acting as a driving roller, a pressure plate 12 configured to come in contact with and separate from the retracting roller 11, and a braking force by a torque limiter mechanism (not shown). It is composed of a blocking roller 13 which is rotated by being driven by the feeding roller 11 while urging the feeding roller 11. The original loaded on the paper feeding tray 14 is pressed against the feeding roller 11 by the pressure plate 12 and the feeding roller 11 is pressed.
It is configured to be guided to the blocking roller 13 by the rotational force of, and the originals superposed by the blocking roller 13 and fed are separated one by one and guided to the feeding roller 16 side.
しかしながらかかる構成では前記加圧板12を介して原
稿が常に繰り込みローラ11に圧接されている構成の為
に、原稿が次から次へと連続して給送されてしまう事に
なる。However, in such a configuration, since the document is always pressed against the feeding roller 11 via the pressure plate 12, the document is continuously fed one after another.
そこで前記原稿を間欠的に給送可能にする為に１枚目
の原稿を搬送ローラ側に導いた後、前記加圧板12を離間
させて後続の原稿の給送を断つと共に前記繰り込みロー
ラ11に取り付けたクラッチ手段を作動させて前記繰り込
みローラ11の駆動回転を解除させ、これにより間欠駆動
を可能に構成している。Therefore, in order to make it possible to intermittently feed the original document, after guiding the first original document to the conveying roller side, the pressure plate 12 is separated to interrupt the feeding of the subsequent original document and to the feeding roller 11. The attached clutch means is operated to release the driving rotation of the take-in roller 11, whereby intermittent driving is possible.
そしてかかる装置においては、ジャムが生じた場合
に、該ジャム時における電源停止と連動させて前記クラ
ッチ手段を作動させる事により前記繰り込みローラ11と
他のローラ間の（歯車列間の）連結を解き、これにより
給紙トレー14側からの抜出の容易化を図っている。In such a device, when a jam occurs, the clutch means is operated in conjunction with the stop of the power supply at the time of the jam so that the connection between the feeding roller 11 and the other rollers (between the gear trains) is released. This facilitates the removal from the paper feed tray 14 side.
「考案が解決しようとする技術的課題」 しかしながらクラッチ手段は一般に巻スプリング等で
構成されている為に方向性を有し、この為例えば先記繰
り込みローラ11とその下流側の案内ローラ15間に原稿の
ジャムが生じた場合のように、クラッチ手段が作動後に
前記繰り込みローラ11を順転させながらジャム処理を行
う場合には、前記クラッチ手段内の巻スプリングが締め
付け方向に作用する事になる為に円滑なジャム処理が困
難になる。"Technical problem to be solved by the invention" However, since the clutch means is generally composed of a winding spring or the like, it has directionality. Therefore, for example, the clutch means is provided between the take-in roller 11 and the guide roller 15 on the downstream side thereof. When jam processing is performed while the feeding roller 11 is rotated in the forward direction after the clutch means is actuated, such as when a document is jammed, the winding spring in the clutch means acts in the tightening direction. This makes smooth jam handling difficult.
かかる欠点を解消する為に前記クラッチ手段に双方向
性のクラッチ手段を用いる事も考えられるが、かかるク
ラッチ手段は一般に大型で且つコストアップにつなが
り、前記OA機器内に組込む部品としては不適当である。It is possible to use a bidirectional clutch means for the clutch means in order to solve such a drawback, but such a clutch means is generally large and leads to cost increase, and is not suitable as a component to be incorporated in the OA equipment. is there.
又前記した前記繰り込みローラ11と案内ローラ15間の
歯車を切り離し可能に、一側を接離方向に揺動自在に構
成する事も可能であるが、前記搬送ローラは必ずしも伝
動系を構成する最終歯車部位に位置しているのではな
く、その下流側に他の歯車が連結している場合には前記
構成を取る事が不可能である。Further, it is possible to separate the gear between the take-up roller 11 and the guide roller 15 so that one side can be swung in the contacting and separating direction, but the conveying roller is not always the final component of the transmission system. If the other gear is connected to the downstream side of the gear instead of being located in the gear portion, the above configuration cannot be adopted.
本考案はかかる従来技術の欠点に鑑み、クラッチ手段
を用いる事なく、又その下流側に他の歯車が連結してい
る場合においても、正転方向においても逆転方向におい
てもフリーの状態になし得る、紙搬送機構を提供する事
を目的とする。In view of the drawbacks of the prior art, the present invention can be in a free state in both the forward rotation direction and the reverse rotation direction without using the clutch means and when another gear is connected to the downstream side thereof. , It is intended to provide a paper transport mechanism.
「課題を解決する為の技術手段」 本考案はかかる技術的課題を達成する為に、 例えば前記繰り込みローラ11の軸端側に設けた軸歯車21
の上流側で歯合される中間歯車22及び該中間歯車22に歯
合する全ての歯車を平歯車で構成し、前記中間歯車22を
ローラ軸23方向に沿って、アイドル歯車20側に移動可能
に構成した点。[Technical Means for Solving the Problem] In order to achieve the technical problem, the present invention is directed to, for example, a shaft gear 21 provided on the shaft end side of the take-in roller 11.
Of the intermediate gear 22 meshed on the upstream side of the gear and all gears meshing with the intermediate gear 22 are spur gears, and the intermediate gear 22 can be moved to the idle gear 20 side along the roller shaft 23 direction. Points configured in.
前記繰り込みローラ11のローラ軸23に前記一の軸歯車
21と同一歯径で且つ該軸歯車21に隣接させて、回転自在
にアイドル歯車20を嵌合させた点。The one shaft gear on the roller shaft 23 of the take-in roller 11.
A point that the idle gear 20 is rotatably fitted to the shaft gear 21 and has the same tooth diameter as that of the shaft 21.
前記中間歯車22の移動量が少なくとも前記一の軸歯車
21から離脱可能な移動量である点。The amount of movement of the intermediate gear 22 is at least the one shaft gear
The amount of movement that can be separated from 21.
を特徴とする紙搬送機構を提案する。We propose a paper transport mechanism characterized by.
「作用」 かかる技術手段によれば、前記中間歯車22と、該歯車
に歯合される各歯車はいずれも平歯車で形成されている
為に、前記中間歯車22が軸方向に移動する際に何等支障
が生じる事なく、而も該移動により、前記繰り込みロー
ラ11の軸歯車21と中間歯車22との歯合が解除される為
に、前記繰り込みローラ11をフリーの状態にする事が出
来、そしてこの場合において、前記クラッチ手段のよう
に方向性がない為に正転、逆転のいずれも回転させる事
が可能であり、ジャム処理の容易化が達成される。[Operation] According to the technical means, since the intermediate gear 22 and each gear meshed with the gear are formed of spur gears, when the intermediate gear 22 moves in the axial direction, Without any hindrance, the movement causes the engagement between the shaft gear 21 and the intermediate gear 22 of the take-in roller 11 to be released, so that the take-in roller 11 can be set in a free state. In this case, since there is no directivity unlike the clutch means, it is possible to rotate both forward rotation and reverse rotation, which facilitates jam processing.
この際、該繰り込みローラ11の軸歯車21には、同一歯
径のアイドル歯車20が隣接嵌合されている為に、前記中
間歯車22が軸歯車21から離脱した後もアイドル歯車20に
支持されている事になる為に、該アイドル歯車20がガイ
ドとなって中間歯車22の軸歯車21への係合が容易にな
り、該係合の際に平歯車で形成されている軸歯車や中間
歯車端部が損傷する恐れが低減できる。At this time, since the idle gear 20 having the same tooth diameter is fitted adjacent to the shaft gear 21 of the take-in roller 11, the intermediate gear 22 is supported by the idle gear 20 even after the intermediate gear 22 is disengaged from the shaft gear 21. Since the idle gear 20 serves as a guide, the intermediate gear 22 can be easily engaged with the shaft gear 21, and at the time of the engagement, the shaft gear or the intermediate gear formed by the spur gear can be used. The risk of damaging the end of the gear can be reduced.
更に前記軸歯車21離脱後も前記中間歯車22はアイドル
歯車20と歯合している為に、該アイドル歯車20にその下
流側に位置する歯車列を歯合させることにより、前記繰
り込みローラ11がフリーの状態にあってもその下流側に
位置するローラ部材に回転力を伝達する事が容易であ
る。Further, since the intermediate gear 22 is meshed with the idle gear 20 even after the shaft gear 21 is disengaged, by engaging the idle gear 20 with a gear train located on the downstream side thereof, the take-up roller 11 is Even in the free state, it is easy to transmit the rotational force to the roller member located on the downstream side.
この場合前記アイドル歯車20と常に歯合可能に前記中
間歯車22の移動量を設定する事により、繰り込みローラ
11がフリーの状態にあってもその下流側に位置するロー
ラ部材に回転力を伝達する事が可能となり、好ましい。In this case, by setting the moving amount of the intermediate gear 22 so that the idle gear 20 and the idle gear 20 can always mesh with each other,
Even if 11 is in a free state, the rotational force can be transmitted to the roller member located on the downstream side, which is preferable.
この場合、前記中間歯車22の移動動作は、前記加圧板
12の接離動作を行うソレノイドの往復動作に連動して行
うように構成する事により、独立した移動駆動手段が不
用になると共に、前記両者が同期して接離する事はジャ
ム処理を行う上でも、又原稿や記録紙の間欠搬送を行う
上でも好ましい。In this case, the moving operation of the intermediate gear 22 is performed by the pressure plate.
By configuring so as to interlock with the reciprocating motion of the solenoid that performs the contact and separation operations of 12, the independent movement drive means becomes unnecessary, and the simultaneous contact and separation of the two is a jam processing. However, it is also preferable from the standpoint of carrying out intermittent conveyance of originals and recording paper.
「実施例」 以下、図面に基づいて本考案の実施例を例示的に詳し
く説明する。但しこの実施例に記載されている構成部品
の寸法、材質、形状、その相対配置などは特に特定的な
記載がない限りは、この考案の範囲をそれのみに限定す
る趣旨ではなく単なる説明例に過ぎない。[Embodiment] An embodiment of the present invention will be exemplarily described in detail below with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative positions, etc. of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely examples. Not too much.
第４図は本考案の実施例に係る、イメージスキャナに
組込まれた自動原稿送り装置Ｂを示し、図上右方に画像
読取り前の原稿Ｃを積載する給紙トレー14と、画像読取
り後の原稿Ｃを積載する排紙トレー17が上下にほぼ平行
に配設するとともに、その前方の装置内に約Ｃ状の搬送
路を形成する。FIG. 4 shows an automatic document feeder B incorporated in an image scanner according to an embodiment of the present invention. The sheet feed tray 14 on which the document C before image reading is stacked and the image tray after image reading are shown on the right side of the figure. A paper discharge tray 17 on which the document C is stacked is vertically arranged substantially in parallel with each other, and an approximately C-shaped conveyance path is formed in the apparatus in front of the paper discharge tray 17.
搬送路内に上流側より順次、給紙トレー14に積載され
た原稿Ｃを一枚づつ分離しながら給送を行う加圧板12、
繰り込みローラ11、阻止ローラ13からなる分離給送機
構、案内ローラ15、送りローラ16対、装置本体Ａ側の原
稿載置面２と対峙させて配置した原稿読取り板18、該読
み取り板18により読み取り後の原稿Ｃを斜め上方に導く
排紙ガイド19、及び前記排紙トレー16入口端側に設けた
排紙ローラ10が配置され、そしてこれらの各ローラ系は
第２図に示すように平歯車群からなる歯車列を介して連
結されている。A pressure plate 12 that sequentially feeds the originals C stacked on the paper feed tray 14 into the transport path from the upstream side while separating the originals C one by one.
A separating / feeding mechanism including a take-in roller 11 and a blocking roller 13, a guide roller 15, a pair of feed rollers 16, a document reading plate 18 arranged to face the document placing surface 2 on the apparatus main assembly A side, and reading by the reading plate 18. A discharge guide 19 for guiding the rear original C obliquely upward and a discharge roller 10 provided at the entrance end side of the discharge tray 16 are arranged, and each of these roller systems is a spur gear as shown in FIG. They are connected via a gear train consisting of groups.
次に前記歯車列の構成について第２図に基づいて簡単
に説明するに、これらの歯車はいずれも、ローラ軸23端
側に位置し該ローラ軸23を回転自在に軸止するハウジン
グ壁31上に支持軸26,27,41若しくは前記各ローラ軸23,2
4を介して回転自在に配置されており、ステップモータ2
5軸に連結したモータ歯車28の回転力を、該モータ25の
回転力を減速する減速歯車32と中間歯車22,33,34若しく
は後記するアイドル歯車20を介して、上流側より順次、
案内ローラ15、繰り込みローラ11、排紙ローラ10の各軸
歯車35,21,36に所定の回転力を付与可能に構成してい
る。Next, the structure of the gear train will be briefly described with reference to FIG. 2. All of these gears are located on the end side of the roller shaft 23 and on the housing wall 31 for rotatably locking the roller shaft 23. The support shafts 26, 27, 41 or the roller shafts 23, 2
It is rotatably arranged via 4 and step motor 2
The rotational force of the motor gear 28 connected to the five shafts, through the reduction gear 32 and the intermediate gears 22, 33, 34 or the idle gear 20 described later, which reduces the rotational force of the motor 25, sequentially from the upstream side,
A predetermined rotational force can be applied to the shaft gears 35, 21, 36 of the guide roller 15, the take-in roller 11, and the paper discharge roller 10.
尚送りローラ16は減速歯車32の回転力を他側軸端側に
設けた軸歯車（不図示）等を介して回転力が伝達可能に
構成されている。The feed roller 16 is configured so that the rotational force of the reduction gear 32 can be transmitted via a shaft gear (not shown) provided on the other side shaft end side.
次に前記繰り込みローラ11の軸歯車21周囲における、
歯車列構成について第１図に基づいて説明するに、前記
繰り込みローラ11のローラ軸23端側には、前記軸歯車21
の内側に、該軸歯車21と同一歯径の平歯車（アイドル歯
車20）を回転自在に軸支させると共に、該アイドル歯車
20の歯合面下流側に、該歯車20の回転力を受けて排紙ロ
ーラ10に回転力を付与する第３の中間歯車34が歯合して
いる。Next, around the shaft gear 21 of the take-in roller 11,
The structure of the gear train will be described with reference to FIG. 1. The shaft gear 21 is provided on the roller shaft 23 end side of the feeding roller 11.
A spur gear (idle gear 20) having the same tooth diameter as the shaft gear 21 is rotatably supported inside the
A third intermediate gear 34 that receives the rotational force of the gear 20 and applies the rotational force to the paper discharge roller 10 meshes with the downstream side of the meshing surface of 20.
一方前記アイドル歯車20の歯合面下流側には、軸方向
にシフト可能に、第２の中間歯車22が支持軸41に嵌装さ
れている。On the other hand, on the downstream side of the meshing surface of the idle gear 20, a second intermediate gear 22 is fitted on a support shaft 41 so as to be shiftable in the axial direction.
該中間歯車22は、ハウジング壁31面側にコイルばね42
を介装させると共に、その反対側に傾斜壁43aを有する
移動板43を配置し、ソレノイド44とスプリング45により
往復動する連結板46側の垂直壁47に形成した傾斜面47a
を介して前記中間歯車22を軸方向にシフト可能に構成す
る。The intermediate gear 22 has a coil spring 42 on the housing wall 31 side.
And a moving plate 43 having an inclined wall 43a on the opposite side thereof is disposed, and an inclined surface 47a formed on the vertical wall 47 on the side of the connecting plate 46 that reciprocates by the solenoid 44 and the spring 45.
The intermediate gear 22 is configured to be axially shiftable via the.
又前記中間歯車22のシフト量は前記傾斜面47aの奥行
によって定まり、好ましくはソレノイド44ON時、第１図
（ａ）に示すように、軸歯車21とアイドル歯車20の両者
に歯合可能に、ソレノイド44OFF時、第１図（ｂ）に示
すように、軸歯車21から離脱しアイドル歯車20のみに歯
合可能に設定する。Further, the shift amount of the intermediate gear 22 is determined by the depth of the inclined surface 47a, and preferably when the solenoid 44 is ON, as shown in FIG. 1 (a), it can be meshed with both the shaft gear 21 and the idle gear 20, When the solenoid 44 is OFF, as shown in FIG. 1B, the shaft gear 21 is disengaged and only the idle gear 20 is set to be meshable.
又第３図に示すように連結板46の垂直壁47の先側に、
ハウジング壁31面に沿って加圧板12支軸48側に延設する
垂直折曲部49を形成するとともに、該折曲部49の自由端
側にピン50を突設し、該ピン50を、加圧板12の端側より
垂下させた舌片51の係合部51aに係合可能に構成し、前
記連結板46の往復動により、前記ピン50と係合部51aを
介して前記加圧板12を繰り込みローラ11に接離可能に構
成する。Further, as shown in FIG. 3, on the front side of the vertical wall 47 of the connecting plate 46,
A vertical bent portion 49 extending along the surface of the housing wall 31 toward the pressure plate 12 support shaft 48 side is formed, and a pin 50 is projectingly provided on the free end side of the bent portion 49, and the pin 50 is The pressure plate 12 is configured to be engageable with the engaging portion 51a of the tongue piece 51 hung from the end side of the pressure plate 12, and the reciprocating movement of the connecting plate 46 causes the pressure plate 12 via the pin 50 and the engaging portion 51a. Is configured to be able to come into contact with and separate from the take-in roller 11.
次にかかる実施例の作用を原稿の搬送順序に沿って説
明する。Next, the operation of this embodiment will be described in accordance with the document conveying order.
先ず、ソレノイド44をONして連結板46を図上左方に引
張する事により、加圧板12を介して給紙トレー14上の原
稿が繰り込みローラ11周面に圧接されると共に、第１図
（ａ）に示すように、中間歯車22が軸歯車21とアイドル
歯車20の両者に歯合する。First, by turning on the solenoid 44 and pulling the connecting plate 46 to the left in the drawing, the original document on the paper feed tray 14 is pressed against the peripheral surface of the feeding roller 11 via the pressure plate 12, and as shown in FIG. As shown in (a), the intermediate gear 22 meshes with both the shaft gear 21 and the idle gear 20.
この状態でステップモータ25を回転駆動させる事によ
り、阻止ローラ13により原稿の重送を阻止しながら、案
内ローラ13、送りローラ16により原稿読取り板17下面側
の原稿読み取り位置に導かれ、該読み取り位置で装置本
体側の光学的読み取り部を利用して画像読み取り後、排
紙ガイド19及び排紙ローラ10を介して排紙トレー17に導
く。By rotating the step motor 25 in this state, the guide roller 13 and the feed roller 16 guide the document to the document reading position on the lower surface of the document reading plate 17 while blocking the double feeding of the document by the blocking roller 13. After the image is read at the position using the optical reading unit on the apparatus main body side, the sheet is guided to the sheet discharge tray 17 via the sheet discharge guide 19 and the sheet discharge roller 10.
尚、本実施例においては前記原稿が案内ローラ13を通
過した際に、紙検知センサ29によりこれを検知し、ソレ
ノイド44をOFFにする。In this embodiment, when the document passes through the guide roller 13, the paper detection sensor 29 detects this and turns off the solenoid 44.
この結果、スプリング45の弾性力により連結板46が図
上右方に復帰することにより、加圧板12が繰り込みロー
ラ11周面から離間し且つ第１図（ｂ）に示すように、中
間歯車22が軸歯車21から離脱しアイドル歯車20とのみ歯
合する。この結果前記軸歯車21がフリーの状態になるた
めに繰り込みローラ11の回転が停止するが、前記中間歯
車22の上流側に位置する案内ローラ15と送りローラ16は
当然に、又下流側に位置する排紙ローラ10もアイドル歯
車20を介して回転力が付与されている為に円滑な搬送が
可能となる。As a result, the elastic force of the spring 45 causes the connecting plate 46 to return to the right in the drawing, so that the pressure plate 12 is separated from the peripheral surface of the take-in roller 11 and, as shown in FIG. Disengages from the shaft gear 21 and meshes only with the idle gear 20. As a result, the rotation of the take-in roller 11 is stopped because the shaft gear 21 is in a free state, but the guide roller 15 and the feed roller 16 located on the upstream side of the intermediate gear 22 are naturally located on the downstream side. Since the sheet discharging roller 10 is also given a rotational force via the idle gear 20, it is possible to smoothly convey the sheet.
そして前記搬送途中でジャムが生じた場合において
も、モータ電源の停止と共にソレノイド44がOFFされ、
この結果前記と同様に阻止ローラ13により制動力が付勢
された繰り込みローラ11がフリーの状態になる為に、該
ローラのいずれの方向からもジャム処理が可能となる。And even if a jam occurs during the transportation, the solenoid 44 is turned off when the motor power is stopped,
As a result, similarly to the above, the retracting roller 11 to which the braking force is applied by the blocking roller 13 is brought into a free state, so that the jam processing can be performed from any direction of the roller.
従ってかかる実施例によれば、本考案の前記作用が円
滑に達成される。Therefore, according to such an embodiment, the operation of the present invention can be achieved smoothly.
「効果」 以上記載した如く本考案によれば、クラッチ手段を用
いる事なく、又その下流側に他の歯車が連結している場
合においても、ローラの正転方向においても逆転方向に
おいてもフリーの状態になし得る、紙搬送機構を提供す
る事が出来、これにより特に繰り込みローラ11の駆動制
御を容易に行う事が出来、間欠原稿搬送やジャム処理の
容易化が図れる。[Effect] As described above, according to the present invention, even when another gear is connected to the downstream side of the roller without using the clutch means, the roller is free to rotate in the forward rotation direction and the reverse rotation direction. It is possible to provide a paper transporting mechanism that can be brought into a state, and in particular, the drive control of the take-in roller 11 can be easily performed, and intermittent document transportation and jam processing can be facilitated.
又本考案は部品点数の増加と装置の大型化を避けつつ
前記機構を達成するために小型化が要請されるOA分野に
極めて実用的な紙搬送装置の提供が可能となる。Further, the present invention can provide an extremely practical paper conveying device in the OA field in which miniaturization is required to achieve the above mechanism while avoiding an increase in the number of parts and an increase in size of the device.
又更に本実施例においては本考案を繰り込みローラの
駆動制御に適用した場合について説明してきたが、本考
案はこれのみに限定されることなく、プリンタや複写機
内に組込まれる記録紙給送装置の各種ローラの駆動制御
にも適用可能である。Further, in the present embodiment, the case where the present invention is applied to the drive control of the feeding roller has been described. However, the present invention is not limited to this, and a recording paper feeding device incorporated in a printer or a copying machine can be used. It is also applicable to drive control of various rollers.
第１図乃至第４図は本考案の実施例に係る自動原稿送り
装置を示し、第４図はその全体レイアウトを示す正面断
面図、第２図は歯車列とローラとの関係を示す正面断面
図、第１図（ａ）（ｂ）はその平面図で、ソレノイドの
ON/OFF時における歯車の歯合状態を示す。第３図はソレ
ノイドと加圧板との結合状態を示す作用図である。1 to 4 show an automatic document feeder according to an embodiment of the present invention, FIG. 4 is a front sectional view showing the overall layout, and FIG. 2 is a front sectional view showing the relationship between a gear train and rollers. Figures 1 (a) and 1 (b) are plan views of the solenoid.
It shows the meshing state of the gears at ON / OFF. FIG. 3 is an operation diagram showing a connected state of the solenoid and the pressure plate.
Claims (3)
結された歯車列よりの回転力を受けて原稿若しくは記録
紙を搬送させながら所定の画像読取り若しくは画像形成
を行う紙搬送機構において、 少なくとも一のローラ軸に連結された軸歯車に回転力を
付与する中間歯車と、前記軸歯車に隣接させて前記ロー
ラ軸に回転自在に嵌合させた、前記軸歯車と同一歯径の
アイドル歯車とを設けると共に、これらの歯車及び前記
中間歯車に歯合される他の歯車を平歯車で形成し、前記
軸歯車の歯合位置から離脱可能に、該中間歯車を軸方向
に沿ってアイドル歯車側に移動可能に構成し、更に前記
軸歯車の下流側に位置する歯車列をアイドル歯車側に歯
合させた事を特徴とする紙搬送機構1. A paper transport mechanism for performing a predetermined image reading or image formation while transporting a document or recording paper by receiving a rotational force from a gear train connected to the shaft end side of each roller arranged on a transport path. An intermediate gear for applying a rotational force to a shaft gear connected to at least one roller shaft, and an idler having the same tooth diameter as the shaft gear rotatably fitted to the roller shaft adjacent to the shaft gear. A gear is provided, and these gears and other gears meshed with the intermediate gear are formed as spur gears, and the intermediate gear is idle along the axial direction so as to be disengageable from the meshing position of the shaft gear. A paper transport mechanism characterized in that the gear train is configured to be movable to the gear side, and a gear train located on the downstream side of the shaft gear is meshed with the idle gear side.
能に前記中間歯車の移動量を設定する事を特徴とする請
求項１）記載の紙搬送機構2. The paper transport mechanism according to claim 1, wherein the amount of movement of the intermediate gear is set so that the idle gear and the intermediate gear can always mesh with each other.
繰込みローラその他の給送ローラ軸に固着された軸歯車
である場合において、前記紙積載部に載置された原稿の
接離動作を行うソレノイドの往復動に連動させて前記中
間歯車の移動動作を行うように構成した事を特徴とする
請求項１）記載の紙搬送機構3. When the shaft gear is a shaft gear fixed to a feeding roller shaft or another feeding roller shaft facing the paper stacking unit, a contact of an original document placed on the paper stacking unit is achieved. 2. The paper transport mechanism according to claim 1, wherein the intermediate gear is moved in association with the reciprocating movement of a solenoid that performs a separating operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989126620U JP2504161Y2 (en) | 1989-10-31 | 1989-10-31 | Paper transport mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989126620U JP2504161Y2 (en) | 1989-10-31 | 1989-10-31 | Paper transport mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0364941U JPH0364941U (en) | 1991-06-25 |
| JP2504161Y2 true JP2504161Y2 (en) | 1996-07-10 |
Family
ID=31674425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989126620U Expired - Lifetime JP2504161Y2 (en) | 1989-10-31 | 1989-10-31 | Paper transport mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2504161Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6133826B2 (en) * | 2014-08-29 | 2017-05-24 | 富士通フロンテック株式会社 | Medium feeding device, voting ticket issuing device, and pick roller rotation suppressing method |
| CN117358353B (en) * | 2023-10-17 | 2024-04-12 | 东莞市铁石文档科技有限公司 | Anti-blocking paper shredder based on automatic reverse direction |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4220647Y1 (en) * | 1964-03-05 | 1967-12-01 | ||
| JPS61257838A (en) * | 1985-05-08 | 1986-11-15 | Ricoh Co Ltd | Paper feed device |
| JPS6279139A (en) * | 1985-09-30 | 1987-04-11 | Toshiba Corp | Paper feeder in electronic copying machine |
-
1989
- 1989-10-31 JP JP1989126620U patent/JP2504161Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0364941U (en) | 1991-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0578496B2 (en) | ||
| JP5365999B2 (en) | Automatic document feeder and image forming apparatus | |
| JP2504161Y2 (en) | Paper transport mechanism | |
| DE60132545T2 (en) | Automatic document feeder and image forming apparatus with such a device | |
| JP3277962B2 (en) | Paper feeder | |
| JP2000249164A (en) | Engagement device and automatic document feeder using the same | |
| JPS62244834A (en) | Automatic paper feeding device | |
| JP2548822Y2 (en) | Recording paper transport mechanism | |
| JP2913431B2 (en) | Document feeder for image forming apparatus | |
| JP3038583B2 (en) | Automatic document feeder | |
| JP3040640B2 (en) | Sheet material feeding device | |
| JP2572780Y2 (en) | Document feeder | |
| JP2578724Y2 (en) | Document feeder | |
| JP3317743B2 (en) | Paper feeder | |
| JP2563488Y2 (en) | Automatic document feeder | |
| JPH07109041A (en) | Paper feeder | |
| JPS6255668A (en) | Copying machine | |
| JPH06227697A (en) | Document carrier device | |
| JPH03259829A (en) | Automatic paper feeding device | |
| JP2578725Y2 (en) | Document feeder | |
| JPH0626502Y2 (en) | Document feeder | |
| JPS6213370A (en) | Paper-supplying device for printer | |
| JPS6317740A (en) | Automatic paper sheet feeding device | |
| JP2001099196A (en) | Drive transmitting mechanism | |
| JPH0223146A (en) | Original conveying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |