JPS6317740A - Automatic paper sheet feeding device - Google Patents

Automatic paper sheet feeding device

Info

Publication number
JPS6317740A
JPS6317740A JP16253986A JP16253986A JPS6317740A JP S6317740 A JPS6317740 A JP S6317740A JP 16253986 A JP16253986 A JP 16253986A JP 16253986 A JP16253986 A JP 16253986A JP S6317740 A JPS6317740 A JP S6317740A
Authority
JP
Japan
Prior art keywords
roller
gear
paper
paper feed
conveyance
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
JP16253986A
Other languages
Japanese (ja)
Inventor
Hironori Tanaka
洋典 田中
Hiroshi Morimoto
宏 森本
Matahei Kotani
小谷 又平
Masafumi Matsumoto
雅史 松本
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 JP16253986A priority Critical patent/JPS6317740A/en
Publication of JPS6317740A publication Critical patent/JPS6317740A/en
Pending legal-status Critical Current

Links

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  • Delivering By Means Of Belts And Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PURPOSE:To prevent paper sheets from being fed in plurality at a time from between a paper feed roller and a separation rubber plate by interposing a one-way clutch between a roller shaft of the paper feed roller and a paper feed gear. CONSTITUTION:Since a one-way clutch 16 is interposed between a roller shaft of a paper feed roller 3 and a paper feed gear 19 so that the paper feed roller can rotate freely, the paper feed roller rotates at an approximately same speed with that of a 1st transfer roller 4 via a paper sheet. The paper feed gear 19, on the other hand, continues to rotate at a constant speed regardless of the rotary speed of the paper feed roller 3 and its rotation is transmitted to a send-out gear 18. Accordingly, while a send-out roller 2 rotates intermittently at approximately the same speed with that of the 1st transfer roller 4 via a paper sheet only when the roller 2 comes into contact with the paper sheet due to a one-way clutch 21 interposed between a roller shaft of the roller 2 and the send-out gear 18, the roller 2 rotates at a constant speed lower than that of a 1st transfer gear 13 transmitted from the paper feed gear 19 irrespectively of the rotary speed of the paper feed roller 13 when the roller 2 is not in contact with the paper sheet.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、ファクシミリ装置、複写機或いは光学的文字
読み取り装置等の機器において、情報が記載された原稿
や、記録再生のためのシート等の用紙を、読み取り部や
記録再生部に自動的に給送するのに用いられる自動給紙
装置に関するものである。
[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to devices such as facsimile machines, copying machines, and optical character reading devices, in which documents containing information, sheets for recording and reproduction, etc. The present invention relates to an automatic paper feeding device used to automatically feed paper to a reading section or a recording/reproducing section.

〈従来の技術〉 このような用途に用いられる一般的な自動給紙装置は、
第3図に示すような構成になっている。
<Conventional technology> A typical automatic paper feeder used for such purposes is
The configuration is as shown in FIG.

即ち、下部用紙ガイド板1とこれに平行に対設された上
部用紙ガイド板(図示せず)との間に、矢印で示す搬送
方向に給送される原稿等の用紙をガイドするための用紙
搬送路が構成され、この用紙搬送路の挿入口であるホッ
パ(図示せず)に多数枚の用紙が積層してセットされる
と、偏心ローラからなる繰出しローラ2とこれに圧接さ
れた繰出しスプリング(図示せず)とにより間欠的に紙
送り動作が行なわれるとともに、給紙ローラ3とこれに
用紙を押し付ける耐摩耗性に優れた分離用ゴム仮(図示
せず)との間から用紙が1枚ずつに分離して送出され、
この分離送出された用紙が第1および第2の搬送ローラ
4,5とこれらにそれぞれ圧接されたピンチローラ(図
示せず)とにより定速度で搬送される。この定速度搬送
時に密着イメージセンサ6によって用紙に記載の情報が
光学的に読み取られる。
That is, between the lower paper guide plate 1 and the upper paper guide plate (not shown) provided parallel to the lower paper guide plate 1, there is a paper sheet for guiding paper such as a document being fed in the transport direction shown by the arrow. When a conveyance path is configured and a large number of sheets of paper are stacked and set in a hopper (not shown) which is an insertion opening of this paper conveyance path, a feed-out roller 2 consisting of an eccentric roller and a feed-out spring pressed against it (not shown), the paper is fed intermittently, and the paper is fed from between the paper feed roller 3 and a separating rubber temporary (not shown) with excellent abrasion resistance that presses the paper against it. Separated into pieces and sent out,
The separated paper is transported at a constant speed by first and second transport rollers 4 and 5 and pinch rollers (not shown) that are pressed against these rollers, respectively. During this constant speed conveyance, the contact image sensor 6 optically reads the information written on the paper.

前記各ローラ2〜5の駆動伝達機構について説明すると
、この機構はフレーム7に設けられており、駆動源のモ
ータ(図示せず)のモータギヤ8の回転が第1減速ギヤ
9で減速された後に、第2のアイドラギヤ10を介して
第2の搬送ローラ5のローラシャフトに固着された第2
の搬送ギヤ1)に伝達されるとともに、第2のアイドラ
ギヤ10と同一径の第1のアイドラギヤ12を介して第
1の搬送ローラ4のローラシャフトに固着された第1の
搬送ギヤ13に伝達される。この第1の搬送ギヤ13は
、第2の搬送ギヤ10と同一径であって第1のアイドラ
ギヤ12に噛み合う受動ギヤ部13aと、この受動ギヤ
部13aより大径の第1の伝達ギヤ部13bと、受動ギ
ヤ部13aより小径の第2の伝達ギヤ部13cとが一体
に設けられた構成で、第1の伝達ギヤ部13bが、用紙
を密着イメージセンサ6に押し付ける押圧搬送ローラ(
図示せず)のローラシャフトに固着された押圧搬送ギヤ
14に噛み合っているとともに、第2の伝達ギヤ部13
cが第2の減速ギヤ(図示せず)を介して受動側給紙ギ
ヤ15に噛み合っている。
To explain the drive transmission mechanism for each of the rollers 2 to 5, this mechanism is provided in the frame 7, and after the rotation of the motor gear 8 of the drive source motor (not shown) is decelerated by the first reduction gear 9, , a second roller fixed to the roller shaft of the second conveying roller 5 via the second idler gear 10.
is transmitted to the conveyance gear 1), and is also transmitted to the first conveyance gear 13 fixed to the roller shaft of the first conveyance roller 4 via the first idler gear 12 having the same diameter as the second idler gear 10. Ru. The first conveyance gear 13 includes a passive gear portion 13a that has the same diameter as the second conveyance gear 10 and meshes with the first idler gear 12, and a first transmission gear portion 13b that has a larger diameter than the passive gear portion 13a. and a second transmission gear part 13c having a diameter smaller than that of the passive gear part 13a are integrally provided, and the first transmission gear part 13b is a pressure conveyance roller (for pressing the paper against the contact image sensor 6).
The second transmission gear part 13 is engaged with a pressure conveyance gear 14 fixed to a roller shaft (not shown).
c meshes with the passive paper feed gear 15 via a second reduction gear (not shown).

この受動側給紙ギヤ15aは一方向クラッチ16を介し
て給紙ローラ3のローラシャフトに装着されており、こ
のローラシャフトの先端に固着された小径の伝達側給紙
ギヤ15bの回転が第3のアイドラギヤ17を介して繰
出しローラ2のローラシャフトに固着された繰出しギヤ
18に伝達されるようになっている。
This passive side paper feed gear 15a is attached to the roller shaft of the paper feed roller 3 via a one-way clutch 16, and the rotation of the small diameter transmission side paper feed gear 15b fixed to the tip of this roller shaft is caused by the third rotation. It is transmitted through an idler gear 17 to a feeding gear 18 fixed to the roller shaft of the feeding roller 2.

前述の駆動伝達機構において、第1の搬送ギヤ13の回
転が第2減速ギヤを介して受動側給紙ギヤ15aに伝達
され、更に受動側給紙ギヤ15の回転が伝達側給紙ギヤ
15bから第3のアイドラギヤ17を介して繰出しギヤ
18に伝達されるようになっていることにより、給紙ロ
ーラ3および繰出しローラ2は、第1の搬送ローラ4の
回転に対し一定の減速比で回転するようになっている。
In the drive transmission mechanism described above, the rotation of the first conveyance gear 13 is transmitted to the passive paper feed gear 15a via the second reduction gear, and the rotation of the passive paper feed gear 15 is further transmitted from the transmission paper feed gear 15b. The paper feeding roller 3 and the feeding roller 2 rotate at a constant reduction ratio with respect to the rotation of the first conveying roller 4 by being transmitted to the feeding gear 18 via the third idler gear 17. It looks like this.

これは、給紙ローラ3と分離ゴム板との間から1枚ずつ
に分離して送出される最下層の用紙を、その上方部の用
紙がくっつかないように素早く引き抜く必要があるため
で、第1の搬送ローラ4の回転速度を給紙ローラ3や繰
出しローラ2に比し速くしである。一方、給紙ローラ3
には分離ゴム板が用紙を介在して圧接されているため、
第1の搬送ローラ4とこれに圧接されたピンチローラと
の間に用紙が挿入した時に第1の搬送ローラ4に相当の
負荷が加わることになる。そこで、給紙ローラ3のロー
ラシャフトと受動側給紙ギヤ15aとの間に一方向クラ
ッチ6を介在させて、給紙ローラ3を搬送方向にのみフ
リーに回転できるようにしている。これにより、第1の
搬送ローラ4により用紙が送られる時には、この用紙に
よって給紙ローラ3の回転を、受動側給紙ギヤ15aの
回転に拘わらず第1の搬送ギヤ4の周速とほぼ同じにな
るようにし、第1の搬送ローラ4の負荷の軽減を図って
いる。
This is because it is necessary to quickly pull out the bottom layer of paper, which is separated and fed out one by one from between the paper feed roller 3 and the separation rubber plate, so that the paper above it does not stick together. The rotational speed of the first conveying roller 4 is faster than that of the paper feeding roller 3 and the feeding roller 2. On the other hand, paper feed roller 3
Since the separation rubber plate is pressed with the paper in between,
When a sheet is inserted between the first conveyance roller 4 and the pinch roller pressed against it, a considerable load is applied to the first conveyance roller 4. Therefore, a one-way clutch 6 is interposed between the roller shaft of the paper feed roller 3 and the passive paper feed gear 15a, so that the paper feed roller 3 can freely rotate only in the transport direction. As a result, when the paper is fed by the first conveyance roller 4, the rotation of the paper feed roller 3 due to the paper is approximately the same as the circumferential speed of the first conveyance gear 4, regardless of the rotation of the passive paper feed gear 15a. In this way, the load on the first conveyance roller 4 is reduced.

〈発明が解決しようとする問題点〉 しかしながら、前述のように用紙が第1の搬送ローラ4
とピンチローラとの間に挿入して給紙ローラ3の周速が
第1の搬送ローラ4のそれとほぼ同じになり、それに伴
ってこの給紙ローラ3の回転が、これのローラシャフト
に固着された伝達側給紙ギヤ15bおよび第3のアイド
ラギヤ17を介して繰出しギヤ18に伝達されてしまい
、第1の搬送ギヤ13の回転を第2減速ギヤで減速して
給紙ギヤ15a、15bおよび繰出しギヤ18に伝達す
る構成としているにも拘わらず、繰出しローラ2の平均
的周速が第1の搬送ローラ4のそれとほぼ同じになる。
<Problems to be Solved by the Invention> However, as described above, the paper is
The peripheral speed of the paper feed roller 3 becomes almost the same as that of the first conveyance roller 4, and the rotation of the paper feed roller 3 is fixed to the roller shaft. The rotation of the first conveyance gear 13 is decelerated by the second reduction gear, and the rotation of the first conveyance gear 13 is reduced by the second reduction gear to transfer the rotation to the paper feed gears 15a, 15b and the feed gear. Despite the configuration in which the rotation is transmitted to the gear 18, the average circumferential speed of the feeding roller 2 is approximately the same as that of the first conveyance roller 4.

そのため、間欠的に用紙に接触する繰出しローラ18の
用紙への接触頻度が高くなり、給紙ローラ3と分離ゴム
板との間から複数枚の用紙が同時に送出される所謂マル
チフィードが発生する危惧がある。また、薄い用紙の場
合には、分離ゴム板に搬送方向先端が当接して移送を阻
止されている用紙の後部を繰出しローラ2により撮送方
向に移送すべく押されるた“め、用紙にしわができると
云う不都合が生じる。
Therefore, the feed roller 18, which contacts the paper intermittently, comes into contact with the paper more frequently, and there is a risk that so-called multi-feed, where multiple sheets of paper are simultaneously fed from between the paper feed roller 3 and the separation rubber plate, may occur. There is. In addition, in the case of thin paper, the rear part of the paper whose leading edge in the conveying direction comes into contact with the separating rubber plate and is prevented from being conveyed is pushed by the feed roller 2 to be conveyed in the photographing direction, causing wrinkles in the paper. The inconvenience of being able to do so arises.

〈発明の目的〉 本発明は、このような問題点に濫みこれを解消するため
になされたもので、用紙を1枚ずつに分離して安定に給
送できるとともに、薄い用紙に対してもしわを生じさせ
ることなく給送できる優れた給紙性能を有する自動給紙
装置を提供することを目的とするものである。
<Purpose of the Invention> The present invention has been made to solve these problems, and it is possible to separate sheets of paper one by one and feed them stably, and also to be able to feed thin sheets of paper. It is an object of the present invention to provide an automatic paper feeding device that has excellent paper feeding performance and can feed paper without causing wrinkles.

〈問題点を解決するための手段〉 本発明の自動給紙装置は、前記目的を達成するために、
用紙搬送路に、偏心ローラからなる繰出しローラ、給紙
ローラおよび搬送ローラが搬送方向に順次配設され、前
記搬送ローラの駆動用搬送ギヤの回転を、減速ギヤを介
して前記給紙ローラの駆動用給紙ギヤに伝達し、この給
紙ギヤの回転を、アイドラギヤを介して前記繰出しロー
ラの駆動用繰出しギヤに伝達するようになった自動給紙
装置において、前記給紙ギヤを、前記減速ギヤに噛み合
う受動ギヤ部と前記アイドラギヤに噛み合う伝達ギヤ部
とを一体に設けた構成とするとともに、この給紙ギヤと
給紙ローラのローラシャフトとの間に一方向クラッチを
介装し、前記繰出しギヤと繰出しローラのローラシャフ
トとの間に一方向クラッチを介装した構成を特徴とする
ものである。
<Means for solving the problems> In order to achieve the above object, the automatic paper feeder of the present invention has the following features:
A feed roller consisting of an eccentric roller, a paper feed roller, and a conveyance roller are sequentially arranged in the conveyance direction on the paper conveyance path, and the rotation of a conveyance gear for driving the conveyance roller is controlled to drive the paper feed roller via a reduction gear. In an automatic sheet feeding device, the rotation of the sheet feeding gear is transmitted to the feeding gear for driving the feeding roller via an idler gear. A passive gear part that meshes with the idler gear and a transmission gear part that meshes with the idler gear are integrally provided, and a one-way clutch is interposed between the paper feed gear and the roller shaft of the paper feed roller, and the feed gear It is characterized by a structure in which a one-way clutch is interposed between the roller shaft of the feeding roller and the roller shaft of the feeding roller.

〈作用〉 前記構成としたことにより、第1の搬送ローラとピンチ
ローラとの間に用紙の搬送方向先端部が挿入された場合
、給紙ローラのローラシャフトと給紙ギヤとの間に一方
向クラッチを介在していることにより、第1の搬送ロー
ラにより移送されている用紙を介して給紙ローラが第1
の搬送ローラとほぼ同じ周速で回転される。一方、給紙
ギヤは、減速ギヤに噛み合う受動ギヤ部とアイドラギヤ
に噛み合う伝達ギヤ部とが一体に構成されているから、
給紙ローラの回転速度の変化に拘わらず、繰出しローラ
には、給紙ギヤの回転が伝達ギヤ部からアイドラギヤを
介して伝達され、一定速度で回転する。但し、繰出しロ
ーラは、間欠的に用紙に接触した時、繰出しローラのロ
ーラシャフトと繰出しギヤとの間に一方向りランチを介
在していることによって第1の搬送ローラとほぼ同じ周
速で回転され、第1の搬送ローラの負荷が軽減される。
<Function> With the above configuration, when the leading edge of the paper in the conveying direction is inserted between the first conveying roller and the pinch roller, one direction is inserted between the roller shaft of the paper feed roller and the paper feed gear. By using the clutch, the paper feed roller is transferred to the first conveyance roller via the paper being transported by the first conveyance roller.
It rotates at approximately the same circumferential speed as the transport roller. On the other hand, the paper feed gear is integrally configured with a passive gear part that meshes with the reduction gear and a transmission gear part that meshes with the idler gear.
Regardless of changes in the rotation speed of the paper feed roller, the rotation of the paper feed gear is transmitted from the transmission gear section to the feed roller via the idler gear, and the feed roller rotates at a constant speed. However, when the feed roller intermittently contacts the paper, it rotates at approximately the same circumferential speed as the first conveyance roller due to the one-way launch interposed between the roller shaft of the feed roller and the feed gear. This reduces the load on the first conveyance roller.

〈実施例〉 以下、本発明の好適な実施例を図面に基づいて詳述する
<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

第1図および第2図において、第3図と同−若しくは実
質的に同等のものには同一の符号を付しである。そして
、給紙ギヤ19を、第1の搬送ギヤ13の回転を減速す
る第2減速ギヤ20に噛み合う受動ギヤ部19aと第3
のアイドラギヤ17に噛み合う伝達ギヤ部19bとが一
体に設けられた構成とするとともに、この給紙ギヤ19
と給紙ローラ3のローラシャフトとの間に一方向クラッ
チ16を介在させ、繰出しギヤ18と繰出しローラ2の
ローラシャフトとの間に一方向クラッチ21を介在させ
た構成において第3図のものと相違する。
1 and 2, the same or substantially equivalent parts as in FIG. 3 are given the same reference numerals. Then, the paper feed gear 19 is connected to a passive gear part 19a that meshes with a second reduction gear 20 that decelerates the rotation of the first conveyance gear 13, and a third
A transmission gear part 19b that meshes with the idler gear 17 is integrally provided, and this paper feed gear 19
A one-way clutch 16 is interposed between the feed roller 3 and the roller shaft of the feed roller 3, and a one-way clutch 21 is interposed between the feed gear 18 and the roller shaft of the feed roller 2. differ.

次に、第2図に基づいてこの種装置の一般的な構成を補
足説明すると、下部用紙ガイド板1の上方にこれと所定
間隔をもって上部用紙ガイド板22が対設され、この両
用紙ガイド板1.22間に用紙搬送路23が形設されて
いる。また、繰出しローラ2.給紙ローラ3.第1の搬
送ローラ4および第2の搬送ローラ5には、それぞれ操
出しスプリング241分離ゴム板25.第1搬送ピンチ
ローラ26および第2搬送ピンチローラ27が上方から
圧接されている。さらに、用紙を密着・イメージセンサ
6に押し付ける押圧ローラ28が、押圧搬送ギヤ14と
同軸的に設けられている。
Next, to further explain the general configuration of this type of device based on FIG. A paper conveyance path 23 is formed between 1 and 22. Moreover, the feeding roller 2. Paper feed roller 3. The first conveyance roller 4 and the second conveyance roller 5 each include a delivery spring 241 and a separation rubber plate 25. A first conveyance pinch roller 26 and a second conveyance pinch roller 27 are pressed against each other from above. Furthermore, a pressure roller 28 that presses the paper against the contact/image sensor 6 is provided coaxially with the pressure conveyance gear 14 .

前記実施例の作用を、第3図のものと異なる点について
のみ説明する。繰出しローラ2および給紙ローラ3によ
り移送される用紙の搬送方向先端部が第1の搬送ローラ
4と第1搬送ピンチローラ26との間に挿入される前は
、繰出しローラ2および給紙ローラ3がそれぞれ一方向
クラッチ21゜16を介して繰出しギヤ18および給紙
ギヤ19と一体に回転する。そして、用紙が第1の搬送
ローラ4と第1搬送ピンチローラ26との間に挿入され
ると、用紙が第1の区送ローラ3の回転速度に応じた移
動速度で移送される。ここで、給紙ローラ3は、これの
ローラシャフトと給紙ギヤ19との間に一方向クラッチ
16が介在されて搬送方向に対しフリーに回転できるよ
うになっているため、用紙を介して第1の搬送ローラ4
とほぼ同じ周速で回転する一方、給紙ギヤ19は一方向
クラッチ16によって給紙ローラ30回転速度に拘わら
ず一定速度で回転し続け、この回転が伝達ギヤ部19b
から第3のアイドラギヤ17を介して繰出しギヤ18に
伝達される。従って、用紙に間欠的に接触する繰出しロ
ーラ2は、これのローラシャフトと操出しギヤ18との
間に一方向クラッチ21が介在されて搬送方向に対しフ
リーに回転できるようになっているため、間欠的に用紙
に接触した時に用紙を介して第1の搬送ローラ4とほぼ
同じ周速で回転する一方、用紙に接触しない時には、給
紙ローラ3の回転速度とは無関係に給紙ギヤ19から伝
達される第1の搬送ギヤ13の回転より遅い一定速度で
回転する。そのため、繰出しローラ2の用紙への接触頻
度が第3図のものより低くなり、用紙の分離性能が安定
化されるとともに、薄い用紙を給送する場合にもしわを
よせることなく安定に移送できる。
The operation of the embodiment described above will be explained only with respect to the points that are different from that shown in FIG. Before the leading end in the conveyance direction of the sheet to be conveyed by the feed roller 2 and the paper feed roller 3 is inserted between the first conveyance roller 4 and the first conveyance pinch roller 26, the feed roller 2 and the paper feed roller 3 are rotated together with the feed gear 18 and paper feed gear 19 via one-way clutches 21.degree. 16, respectively. Then, when the paper is inserted between the first conveyance roller 4 and the first conveyance pinch roller 26, the paper is conveyed at a moving speed corresponding to the rotational speed of the first conveyance roller 3. Here, the paper feed roller 3 has a one-way clutch 16 interposed between its roller shaft and the paper feed gear 19 so that it can rotate freely with respect to the conveyance direction. 1 conveyance roller 4
On the other hand, the paper feed gear 19 continues to rotate at a constant speed regardless of the rotation speed of the paper feed roller 30 due to the one-way clutch 16, and this rotation is caused by the transmission gear portion 19b.
is transmitted to the feeding gear 18 via the third idler gear 17. Therefore, the one-way clutch 21 is interposed between the feed roller 2, which contacts the paper intermittently, and the feed gear 18, so that the feed roller 2 can rotate freely in the conveying direction. When it is intermittently in contact with the paper, it rotates through the paper at approximately the same circumferential speed as the first conveyance roller 4, while when it is not in contact with the paper, it is rotated from the paper feed gear 19 regardless of the rotational speed of the paper feed roller 3. It rotates at a constant speed that is slower than the rotation of the first conveyance gear 13 to which it is transmitted. Therefore, the frequency of contact of the feeding roller 2 with the paper is lower than that of the one in Fig. 3, and the paper separation performance is stabilized, and even when feeding thin paper, it is possible to stably transport it without wrinkles. .

〈発明の効果〉 本発明の自動給紙装置は、以上のような構成とし、且つ
作用させるようにしたので、第1の搬送ローラめ負荷を
軽減できる構成としながらも、繰出しローラの回転速度
を、用紙に接触しない状態において一定に保持すること
ができ、給紙ローラと分離ゴム板との間からの用紙の複
数枚同時送りを防止することができ、安定に送給するこ
とができる。しかも、薄い用紙に対してもしわを生じさ
せることなく搬送することが可能となる利点がある。
<Effects of the Invention> Since the automatic paper feeding device of the present invention is configured and operated as described above, it is possible to reduce the load on the first conveying roller while reducing the rotational speed of the feeding roller. , it is possible to maintain a constant state without contacting the paper, it is possible to prevent a plurality of sheets of paper from being fed simultaneously from between the paper feed roller and the separation rubber plate, and it is possible to feed stably. Moreover, there is an advantage that even thin paper can be transported without wrinkles.

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

第1図および第2図はそれぞれ本発明の自動給紙装置の
一実施例の要部斜視図および縦断面図、第3図は従来装
置の斜視図である。 2−・−繰出しローラ    3−給紙口−ラ4−搬送
ローラ    13−・−搬送ギャ16−−−一方向ク
ラッチ  17−アイドラギヤ18−・繰出しギヤ  
  19・−給紙ギヤ19a・−・受動ギヤ部   1
9b・・・伝達ギヤ部20・−減速ギヤ     21
−m一方向クラッチ23−用紙搬送路
FIGS. 1 and 2 are a perspective view and a vertical cross-sectional view of essential parts of an embodiment of an automatic paper feeder according to the present invention, respectively, and FIG. 3 is a perspective view of a conventional apparatus. 2--Feeding roller 3-Paper feed slot 4-Transporting roller 13--Transporting gear 16--One-way clutch 17-Idler gear 18--Feeding gear
19.-Paper feed gear 19a--Passive gear part 1
9b...Transmission gear section 20--reduction gear 21
-m one-way clutch 23 - paper conveyance path

Claims (1)

【特許請求の範囲】[Claims] (1)用紙搬送路に、偏心ローラからなる繰出しローラ
、給紙ローラおよび搬送ローラが搬送方向に順次配設さ
れ、前記搬送ローラの駆動用搬送ギヤの回転を、減速ギ
ヤを介して前記給紙ローラの駆動用給紙ギヤに伝達し、
この給紙ギヤの回転を、アイドラギヤを介して前記繰出
しローラの駆動用繰出しギヤに伝達するようになった自
動給紙装置において、前記給紙ギヤを、前記減速ギヤに
噛み合う受動ギヤ部と前記アイドラギヤに噛み合う伝達
ギヤ部とを一体に設けた構成とするとともに、この給紙
ギヤと給紙ローラのローラシャフトとの間に一方向クラ
ッチを介装し、前記繰出しギヤと繰出しローラのローラ
シャフトとの間に一方向クラッチを介装したことを特徴
とする自動給紙装置。
(1) A feed roller including an eccentric roller, a paper feed roller, and a conveyance roller are sequentially arranged in the conveyance direction on the paper conveyance path, and the rotation of the conveyance gear for driving the conveyance roller is controlled via a reduction gear to feed the paper. It is transmitted to the paper feed gear for driving the rollers,
In an automatic paper feeder that transmits the rotation of the paper feed gear to a feeding gear for driving the feeding roller via an idler gear, the paper feeding gear is connected to a passive gear portion meshing with the reduction gear and the idler gear. In addition, a one-way clutch is interposed between the paper feed gear and the roller shaft of the paper feed roller, and a one-way clutch is interposed between the feed gear and the roller shaft of the feed roller. An automatic paper feeder characterized by having a one-way clutch interposed therebetween.
JP16253986A 1986-07-10 1986-07-10 Automatic paper sheet feeding device Pending JPS6317740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16253986A JPS6317740A (en) 1986-07-10 1986-07-10 Automatic paper sheet feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16253986A JPS6317740A (en) 1986-07-10 1986-07-10 Automatic paper sheet feeding device

Publications (1)

Publication Number Publication Date
JPS6317740A true JPS6317740A (en) 1988-01-25

Family

ID=15756533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16253986A Pending JPS6317740A (en) 1986-07-10 1986-07-10 Automatic paper sheet feeding device

Country Status (1)

Country Link
JP (1) JPS6317740A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05162888A (en) * 1991-12-18 1993-06-29 Matsushita Graphic Commun Syst Inc Image communication device
US20150275987A1 (en) * 2014-03-28 2015-10-01 Canon Kabushiki Kaisha One-way clutch and sheet feeding roller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05162888A (en) * 1991-12-18 1993-06-29 Matsushita Graphic Commun Syst Inc Image communication device
US20150275987A1 (en) * 2014-03-28 2015-10-01 Canon Kabushiki Kaisha One-way clutch and sheet feeding roller
CN104963965A (en) * 2014-03-28 2015-10-07 佳能株式会社 One-way clutch and sheet feeding roller

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