JPS5874378A - Paper feeder - Google Patents
Paper feederInfo
- Publication number
- JPS5874378A JPS5874378A JP56172891A JP17289181A JPS5874378A JP S5874378 A JPS5874378 A JP S5874378A JP 56172891 A JP56172891 A JP 56172891A JP 17289181 A JP17289181 A JP 17289181A JP S5874378 A JPS5874378 A JP S5874378A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- roller
- drive source
- supply roller
- stopped
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/02—Rollers
- B41J13/03—Rollers driven, e.g. feed rollers separate from platen
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Facsimiles In General (AREA)
- Handling Of Cut Paper (AREA)
- Paper Feeding For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は記録装置や読取装置に用いられる用紙搬送装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper conveyance device used in a recording device or a reading device.
プリンタ等の記録装置や原稿の読み取りを行う読取装置
では、記録紙あるいは原稿を移動させながら記録あるい
は読み取りを行う方式を採用しているものが多い。この
ような方式を採用している装置では、記録あるいは読み
取り時に一用紙全正確に搬送はせるための用紙搬送機構
と、この機構に供給トレイ等から用紙を送り込むための
用紙送り込み機構との２つの機構を備えているのが通常
である。2. Description of the Related Art Many recording devices such as printers and reading devices that read manuscripts employ a method of recording or reading while moving recording paper or manuscripts. Devices that use this type of system have two mechanisms: a paper transport mechanism that transports all sheets of paper accurately during recording or reading, and a paper feed mechanism that feeds paper from a supply tray etc. to this mechanism. It is usually equipped with a mechanism.
第１図はこのような２つの機構を備えた従来の用紙搬送
装置を示したものである。この装置では１対の搬送ロー
ラ１，２が用紙搬送機構Ａの一部を構成し、供給ローラ
３とその駆動源４および駆動力を伝達す名ためのタイミ
ングベルト等の駆動力伝達手段５が用紙送シ込み機構Ｂ
を構成している。用紙搬送機構Ａの駆動源は、用紙送り
込み機構Ｂの駆動源４とは別個に設けられている。FIG. 1 shows a conventional paper conveyance device equipped with such two mechanisms. In this device, a pair of conveying rollers 1 and 2 constitute a part of a paper conveying mechanism A, and a supply roller 3, its driving source 4, and driving force transmitting means 5 such as a timing belt for transmitting the driving force are also included. Paper feeding mechanism B
It consists of A drive source for the paper transport mechanism A is provided separately from a drive source 4 for the paper feed mechanism B.
さてこの用紙搬送装置では、まず駆動源４が駆動され、
供給ローラ３が矢印方向（時計方向）に回転を開始する
。これと共に用紙６がガイド板７゜８に案内されて前進
する。対向する１対の搬送ローラ１，２には、図示しな
込電磁制御機構によってわずかの隙間が設けられており
、用紙６はこの時点でこの隙間を通過することができる
。用紙６の先端が１対の搬送ローラ１，２を通過すると
、これらのローラ１，２に接近して配置されているセン
サ９がこれを検出する。これにより駆動源４の駆動が停
止され、用紙搬送機構Ａに対する用紙６の送り込みが完
了する。Now, in this paper conveyance device, first, the drive source 4 is driven,
The supply roller 3 starts rotating in the direction of the arrow (clockwise). At the same time, the paper 6 is guided by the guide plate 7.degree. 8 and moves forward. A slight gap is provided between the pair of opposing transport rollers 1 and 2 by an electromagnetic control mechanism (not shown), and the paper 6 can pass through this gap at this point. When the leading edge of the paper 6 passes through a pair of transport rollers 1 and 2, a sensor 9 located close to these rollers 1 and 2 detects this. As a result, the driving of the drive source 4 is stopped, and feeding of the paper 6 to the paper transport mechanism A is completed.
このようにして図示のように先端部分６Ａの位置決めが
行われた用紙６は、用紙搬送機構Ａｖｃよって、装置の
規定する所定のタイミングで送シ出される。すなわちこ
のタイミングで１対の搬送ローラ１，２が用紙６をその
両側から押し付けると共に矢印方向に回転を開始し、用
紙６を記録ヘット責記録部）１１（読取装置の場合には
読取部）゛の方向へ進ませる。これにより記録ヘッド１
１は、用紙６の先端部分の規定の位置から記録動作を行
うことができる。The paper 6 whose leading end portion 6A has been positioned in this manner as shown in the figure is fed out by the paper transport mechanism Avc at a predetermined timing defined by the apparatus. That is, at this timing, the pair of transport rollers 1 and 2 press the paper 6 from both sides and start rotating in the direction of the arrow, moving the paper 6 to the recording head (recording section) 11 (reading section in the case of a reading device). move in the direction of As a result, recording head 1
1 can perform a recording operation from a predetermined position at the leading edge of the paper 6.
ところがこのような用紙搬送装置では、用紙搬送機構Ａ
が駆動を開始するたびに、比較的高い摩擦音が発生する
場合があった。これは、用紙の後端部分６Ｂが、停止状
態にある供給ローラ３の周面と摩擦する際に発生するも
のであり、供給ローラ３の材質や押圧力、更には用紙の
状態によっては非常に耳ざわりな音となる場合があった
。However, in such a paper transport device, the paper transport mechanism A
There were cases in which a relatively high-pitched friction noise was generated each time the motor started driving. This occurs when the trailing edge portion 6B of the paper rubs against the peripheral surface of the supply roller 3 which is in a stopped state, and may vary depending on the material and pressing force of the supply roller 3, as well as the condition of the paper. In some cases, the sound was jarring.
本発明はこのような事情に鑑みてなされたもので、駆動
力の伝達が停止された状態のローラと、これに接触した
状態で他の手段によって搬送される用紙との間で摩擦音
が生ずることのない用紙搬送装置を提供することを目的
とする。The present invention has been made in view of the above circumstances, and is intended to prevent frictional noise from occurring between a roller in which the transmission of driving force is stopped and a sheet of paper conveyed by other means while in contact with the roller. The purpose of the present invention is to provide a paper conveyance device that is free of paper transport.
本発明では、用紙送シ込み機構の駆動源と供給ローラと
の間に、駆動源の動作時に供給ローラを回転させる一方
、停止時には所定方向に作用する外力に対して供給ロー
ラを従動状態に置く伝達機構を取り付け、前記した目的
を達成する。In the present invention, the supply roller is placed between the drive source of the paper feeding mechanism and the supply roller, so that the supply roller is rotated when the drive source is in operation, but when the drive source is stopped, the supply roller is placed in a driven state against an external force acting in a predetermined direction. A transmission mechanism is installed to achieve the above objectives.
以下実施例につき本発明の詳細な説明する。The present invention will be described in detail below with reference to Examples.
第１図と同一部分には同一の符号を付した第２図は、プ
リンタにおける用紙搬送装置を示したものである。この
装置では、用紙送シ込み機構Ｂの供給ローラ３と駆動源
（モータ）４との間にワンウェイクラッチ１４を設け、
駆動源４の駆動軸４Ａとワンウェイクラッチ１４の駆動
軸１４Ａとの間に第１のタイミングベルト１５を、また
ワンウェイクラッチ１４の従動軸１４Ｂと供給ローラ３
の軸３Ａとの間に第２のタイミングベルト１６を掛は渡
している。FIG. 2, in which the same parts as in FIG. 1 are given the same reference numerals, shows a paper conveying device in a printer. In this device, a one-way clutch 14 is provided between the supply roller 3 of the paper feeding mechanism B and the drive source (motor) 4,
A first timing belt 15 is connected between the drive shaft 4A of the drive source 4 and the drive shaft 14A of the one-way clutch 14, and a first timing belt 15 is connected between the driven shaft 14B of the one-way clutch 14 and the supply roller 3.
A second timing belt 16 is passed between the shaft 3A and the shaft 3A.
ワンウェイクラッチ１４は、駆動軸４Ａが矢印（時計方
向）方向に回転すると、その内部の機構がかみ合って動
力を伝達する。すなわち用紙送り込み機構Ｂが動作状態
にあるときは、駆動源４の回転力を供給ローラ３に伝達
させ、供給ローラ３を矢印方向に回転させる。これによ
シ、用紙６は用紙搬送機構Ａの方向に送られる。When the drive shaft 4A rotates in the direction of the arrow (clockwise), the one-way clutch 14 engages its internal mechanism and transmits power. That is, when the paper feeding mechanism B is in an operating state, the rotational force of the drive source 4 is transmitted to the supply roller 3, and the supply roller 3 is rotated in the direction of the arrow. As a result, the paper 6 is sent in the direction of the paper transport mechanism A.
用紙の先端６Ａがセンサ９に検出された時点で駆動軸４
Ａの回転が停止する。この後、所定のタイミングで１対
の搬送ローラ１，２がそれぞれ矢印方向に回転し用紙６
の搬送を開始する。このとき、用紙の後端６Ｂの近傍は
供給ローラ３に押圧された状態にある。このため、用紙
６の進行に伴りて供給ローラ３は矢印方向に回転する力
を受ける。この回転力が作用すると、ワンウェイクラッ
チの従動軸１４Ｂは駆動軸１４Ａから切り離され自由に
回転できる状態となる。従って供給ローラ３は、用紙６
と接触を保っている間、その搬送速度に等しい周速度で
回転する。このとき用紙６供給ローラ３の周面との間で
摩擦音が発生することがないことはもちろんである。When the leading edge 6A of the paper is detected by the sensor 9, the drive shaft 4
Rotation of A stops. Thereafter, at a predetermined timing, the pair of transport rollers 1 and 2 each rotate in the direction of the arrow to remove the paper 6.
transportation will begin. At this time, the vicinity of the trailing edge 6B of the paper is in a state of being pressed by the supply roller 3. Therefore, as the paper 6 advances, the supply roller 3 receives a rotational force in the direction of the arrow. When this rotational force is applied, the driven shaft 14B of the one-way clutch is separated from the drive shaft 14A and can freely rotate. Therefore, the supply roller 3
While in contact with the material, it rotates at a circumferential speed equal to its conveying speed. Of course, at this time, no frictional noise is generated between the paper 6 and the circumferential surface of the supply roller 3.
以上のように本発明にｋｆＬば、供給ローラを再駆動し
用紙の後端を完全に送り出すような複雑な手順をとるこ
となく、簡単な機構で用紙の摩擦音を防止することがで
きる。As described above, according to the present invention, it is possible to prevent paper friction noise with a simple mechanism without taking complicated steps such as re-driving the supply roller and completely feeding out the trailing edge of the paper.
なお実施例ではワンウェイクラッチを用いたがこれと同
等の働きをする電磁クラッチその他の伝達機構を用いて
よいことはもちろんである。また実施例では用紙搬送機
構に、隙間を設定することのできる搬送ローラや位置決
め用のセンサを用いたが、これらは適宜変更できるもの
であることもいうまでもない。Although a one-way clutch is used in the embodiment, it is of course possible to use an electromagnetic clutch or other transmission mechanism that functions similarly. Further, in the embodiment, the paper conveyance mechanism uses a conveyance roller that can set a gap and a positioning sensor, but it goes without saying that these can be changed as appropriate.
第１図は従来の用紙搬送装置を説明するための概略構成
図、第２図は本発明の一実施例を説明するための概略構
成図である０
１．２・・・・・・搬送ローラ
３・・・・・・供給ローラ
４・・・・・駆動源
６１６１３．・用紙
１１・・・・・記録ヘッド
１４３１９１０．ワンウェイクラッチ
出願人
富士ゼロックス株式会社
代理人
弁理士 山 内 梅 雄
茹 ｌ 図FIG. 1 is a schematic configuration diagram for explaining a conventional paper conveyance device, and FIG. 2 is a schematic configuration diagram for explaining an embodiment of the present invention. 3... Supply roller 4... Drive source 61613. -Paper 11...Recording head 1431910. One-way Clutch Applicant Fuji Xerox Co., Ltd. Representative Patent Attorney Ume Yuuya Yamauchi
Claims (1)
いは読取部において用紙の搬送を行うための用紙搬送手
段と、前記手段に用紙を送り込むための供給ローラと、
回転力を発生させる駆動源と、駆動源の動作時に前記供
給ローラに回転力全伝達しこれを所定方向に回転させる
一方、駆動源の停止時に供給ローラを前記所定方向に回
転させようとする外力に対して従動状態に置く伝達機構
とを具備することを特徴とする用紙搬送装置。a paper transport means for transporting paper in a recording section or a reading section for recording or reading image information; a supply roller for feeding the paper into the means;
A drive source that generates a rotational force, and an external force that transmits the full rotational force to the supply roller when the drive source is in operation to rotate it in a predetermined direction, and rotates the supply roller in the predetermined direction when the drive source is stopped. A paper conveyance device comprising: a transmission mechanism placed in a driven state relative to the transmission mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56172891A JPS5874378A (en) | 1981-10-30 | 1981-10-30 | Paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56172891A JPS5874378A (en) | 1981-10-30 | 1981-10-30 | Paper feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5874378A true JPS5874378A (en) | 1983-05-04 |
Family
ID=15950237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56172891A Pending JPS5874378A (en) | 1981-10-30 | 1981-10-30 | Paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5874378A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047163A (en) * | 2019-06-06 | 2020-12-08 | 精工爱普生株式会社 | Winding device and printing system |
-
1981
- 1981-10-30 JP JP56172891A patent/JPS5874378A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047163A (en) * | 2019-06-06 | 2020-12-08 | 精工爱普生株式会社 | Winding device and printing system |
| CN112047163B (en) * | 2019-06-06 | 2022-10-04 | 精工爱普生株式会社 | Winding device and printing system |
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