JPS59114239A - Paper feed device for electrostatic recording device - Google Patents
Paper feed device for electrostatic recording deviceInfo
- Publication number
- JPS59114239A JPS59114239A JP57225300A JP22530082A JPS59114239A JP S59114239 A JPS59114239 A JP S59114239A JP 57225300 A JP57225300 A JP 57225300A JP 22530082 A JP22530082 A JP 22530082A JP S59114239 A JPS59114239 A JP S59114239A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- feed
- roller
- tension
- spring
- 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
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/52—Friction retainers acting on under or rear side of article being separated
- B65H3/5246—Driven retainers, i.e. the motion thereof being provided by a dedicated drive
- B65H3/5253—Driven retainers, i.e. the motion thereof being provided by a dedicated drive the retainers positioned under articles separated from the top of the pile
- B65H3/5261—Retainers of the roller type, e.g. rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明。は、いわゆる電子複写機等の静電記録装置に用
いられる改良された給紙装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention. relates to an improved paper feeding device used in electrostatic recording devices such as so-called electronic copying machines.
いわゆる電子複写機等の静電記録装置においては、カセ
ット等を用いて多数枚の用紙を積重ねて給紙部に装填し
、上から一枚づつ送り出して使用する給紙方法がとられ
ている。用紙の送り出しは通常積重ねられた用紙の上面
に圧接されたコ”ムローラ等を回転させて行われろが、
これのみでをま複数枚の用紙が重なったまま送り出され
てしまうことがある。このため種々の重送防止方法カ５
実用化されているが、高速搬送に適したも１７’）とし
て、用紙の送り出し部分に回転するベアｂトと、該ベル
トに圧接する固定部材を設け、その間を用紙を通過せし
めて２枚目以下の用紙を制止し、最上部の１枚のみを給
送する方法がとられて（−る。第１図は、かかる給紙装
置の一例であって、１はベルト駆動ローラ、２は従動ロ
ーラ、３は送り出しローラで積重ねられた用紙６の最上
層に圧接されて（・る。In electrostatic recording devices such as so-called electronic copying machines, a paper feeding method is used in which a large number of sheets of paper are stacked using a cassette or the like, loaded into a paper feeding section, and fed out one by one from the top. Normally, the paper is fed out by rotating a comb roller or the like that is pressed against the top surface of the stacked paper.
This alone may result in multiple sheets of paper being fed out in a pile. For this reason, there are various ways to prevent double feeding.
Although it has been put into practical use, as a model 17' that is suitable for high-speed conveyance, a rotating belt and a fixed member that press against the belt are provided in the paper feeding section, and the paper is passed between them to convey the second sheet. A method is adopted in which the following sheets of paper are stopped and only the topmost sheet is fed. The roller 3 is brought into pressure contact with the top layer of the stacked sheets 6 by the feed roller.
駆動ローラ１と従動ローラ２の間には送りベルト４が張
設されており、送り出しローラ３＆ま従動ローラ２と同
軸上に取付けられ同時に回転する。５は重送防止部材で
あって回転しな（・よう固定されている。送りベルト４
及び重送防止部材５０表面はゴム等の摩擦係数の高い表
材によって作られている。A feed belt 4 is stretched between the drive roller 1 and the driven roller 2, and is attached coaxially with the feed roller 3 and the driven roller 2 and rotates at the same time. 5 is a double feed prevention member, which is fixed so that it does not rotate.Feed belt 4
The surface of the double feed prevention member 50 is made of a surface material with a high friction coefficient such as rubber.
装置が起動すると各ローラ及びベルトは矢印の方向に回
転し、送り出しローラによって最上部の紙が送り出され
ベルト２と重送防止部材５０間に挿入される。用紙の最
上部の１枚ａはベルトの摩擦力によって搬送され次過程
へ進む、もし用紙ａに２枚目の用紙すが付着して送り出
された場合にも固定されている重送防止部材によって引
きとめられ、２枚が重なったまま次過程に送られること
はない。When the apparatus is started, each roller and belt rotate in the direction of the arrow, and the uppermost sheet of paper is sent out by the delivery roller and inserted between the belt 2 and the double-feed prevention member 50. The topmost sheet of paper a is conveyed by the frictional force of the belt and advances to the next process. Even if a second sheet of paper adheres to sheet a and is sent out, the fixed double-feed prevention member They will not be held back and sent to the next process with two sheets stacked on top of each other.
上記のごとき装置において最も重要な点は、送りベルト
２が常に適度の圧力で重送防止部材５に接圧している事
であって、圧力が不足の場合には重送防止部材の効果が
なくなり２枚以上の紙が重なって通過してしまうことに
なる。このため送りベルト２は常に適度の緊張を保つ、
ていなければならない。The most important point in the above-mentioned device is that the feed belt 2 is always in contact with the double-feed prevention member 5 with an appropriate pressure, and if the pressure is insufficient, the double-feed prevention member becomes ineffective. This results in two or more sheets of paper passing over each other. For this reason, the feed belt 2 always maintains appropriate tension.
must be maintained.
しかるにゴム等の弾性材によって作られている送りベル
トは、使用初期、長期使用時に伸びる性質があり、その
緊張度が経時と共に低下してゆく傾向がある。またベル
トを張設するローラの間隔、ベルトの剛性のバラツキ等
によってもベルトの緊張度は変化するため、上記の如き
装置には恵送防止効果が不安定で、且つその調整も難し
いと言う欠点があった。However, a feed belt made of an elastic material such as rubber has a tendency to stretch during initial use and long-term use, and its tension tends to decrease over time. In addition, the tension of the belt changes depending on the distance between the rollers tensioning the belt, variations in the rigidity of the belt, etc., so the above-mentioned device has the disadvantage that the anti-feeding effect is unstable and it is difficult to adjust it. was there.
本発明の目的は確実な重送防止機能を有する簡易な静電
記録装置用給紙装置を提供することにある。An object of the present invention is to provide a simple paper feeding device for an electrostatic recording device that has a reliable double-feed prevention function.
上記の目的は、上記のごとき給紙装置の送りベルトのロ
ーラの間の部分にバネによって付勢さし、且つ前記ベル
ト釦従動するテンシロンローラを圧接した静電記録装置
用給紙装置によって達成された。テンシロンローラは送
りベルトのループの外側に設け、ループの内側に向って
圧接してもより、ループの内側に設け、ループの外側に
向って圧接してもよい。テンションロールに付勢するバ
ネはコイルバネ等いかなる形状のものであってもよく、
また設置の位置によって圧縮ノ（ネでもよく、引張バネ
でもよい。またベルトの伸び等を調整するためバネの支
点を移動する等して）ぐネの張力を可変とし、テンシロ
ンローラの圧接力を調整できるようにすることが好まし
く１゜
〔発明の作用効果〕
本発明にもとづく給紙装置によれば、送りベル） ＆’
！ 該ベルトに対し、バネの力により圧接されたテンシ
ョンローラによって引張られ、ベルトが伸長した場合Ｕ
Ｃも−・定の緊張度が保たれろため・該送りベルトと前
記重送防止機能との圧接状Ｒ；は常に適正に保たれ、確
実な恵送防止動作が行われろ。The above object has been achieved by a paper feeding device for an electrostatic recording device in which a portion of the feeding belt of the paper feeding device as described above is biased by a spring, and a Tensilon roller driven by the belt button is pressed into contact with the feeding belt. Ta. The tensilon roller may be provided outside the loop of the feed belt and press against the inside of the loop, or it may be provided inside the loop and press against the outside of the loop. The spring that biases the tension roll may be of any shape, such as a coil spring.
Additionally, depending on the installation position, the tension of the compression spring (or tension spring may be used.Also, by moving the fulcrum of the spring to adjust the elongation of the belt, etc.), the tension of the spring can be varied, and the pressure contact force of the Tensilon roller can be varied. It is preferable that the paper feeding device according to the present invention is adjustable.
! When the belt is stretched by a tension roller pressed against the belt by the force of a spring, U
Since a constant tension level C must also be maintained, the pressure contact R between the feed belt and the double feed prevention function must always be maintained properly, and a reliable double feed prevention operation can be performed.
以下本発明の実施例を図によって説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第２図Ａは上記テンションロールを送りローラの外側に
設けた例であって、２１は駆動ローラ、２２は従動ロー
ラ、おは送り出しローラ、冴は送りベルト、部は恵送防
止部材であって、その機能（末弟１図における対応各部
材と同一である。用紙集積部は第２図からは省略されて
いる。テンシロンローラがはバネ２７によって白い矢印
方向に引張られ、送りベルト夙に圧接してベルトの張力
を一定に保っている。詔はバネｎの一端を留めるレバー
であって、その位ｆｔｆＹ変えることによりテンション
ロルの圧接力を調節することができるＯ ｐ、ｑｌｒは
上記レバーの切替位置である。FIG. 2A shows an example in which the above-mentioned tension roll is provided outside the feed roller, where 21 is a driving roller, 22 is a driven roller, O is a feed roller, Sae is a feed belt, and B is an anti-feeding member. , its function is the same as the corresponding members in Fig. 1. The paper stacking section is omitted from Fig. 2. The Tensilon roller is pulled in the direction of the white arrow by the spring 27 and pressed against the feed belt. The tension of the belt is kept constant.The yoke is a lever that holds one end of the spring n, and by changing the amount ftfY, the pressure contact force of the tension roll can be adjusted. It's the location.
第２図Ｂはねじりコイルバネ２９ヲ用いテンションロー
ラ刃を押圧した例であって、レバー３１によりバネ四の
一端をｐｌかしテンションローラの圧接力を変え、送り
ベルトの張力を調節することができる ｐ／ 、 ｑ
／ 、 ｒ ’はレバー３１の切替位置である。Fig. 2B shows an example in which a torsion coil spring 29 is used to press the tension roller blade, and the tension of the feed belt can be adjusted by pulling one end of the spring 4 using the lever 31 to change the pressure contact force of the tension roller. p/, q
/ and r' are the switching positions of the lever 31.
第２図Ｃはテンションローラ３２を送りベルトローラの
内側に設けたものでバネ３３によってテンシロンローラ
を白い矢印の方向に引張り送りベルトの張力を一定に保
っている。レバーあによってテンシロンローラの圧接力
を変え、送りベルトの張力を調節できることは上記二側
と同じである。ｐ′−ｑ′／、 ｒＩはレバーあの切替
位置である。In FIG. 2C, a tension roller 32 is provided inside the feed belt roller, and a spring 33 pulls the tension roller in the direction of the white arrow to keep the tension of the feed belt constant. As in the above two cases, the tension of the feed belt can be adjusted by changing the pressing force of the Tensilon roller using the lever. p'-q'/, rI is the switching position of the lever.
上記の給紙装置を具えた静！複写機を試作し長期連続運
転試験を行ったがいづれも送りベルトの伸びによる電送
故障の発生は全く見られなかった。Shizuoka equipped with the above paper feed device! We produced prototype copying machines and conducted long-term continuous operation tests, but no electrical transmission failures due to elongation of the feed belt were observed in any of them.
第１図従来の給紙装置、第２図Ａ、Ｂ、Ｃは本発明によ
る給紙装置の略図である。
あ、 ３０ 、３２・・・テンションローラ２７ 、２
９ 、３３・・・バ ネ
公、 ３１ 、３４・・・張力調節レバー代理人 桑
原 飴 美FIG. 1 is a schematic diagram of a conventional paper feeder, and FIGS. 2A, B, and C are schematic diagrams of a paper feeder according to the present invention. Ah, 30, 32... tension rollers 27, 2
9, 33...Spring Lord, 31, 34...Tension Adjustment Lever Agent Ami Kuwahara
Claims (2)
ベルトとを有する、集積された用紙を１枚づつ送り出す
静電記録装置用給紙装置において、上記ベルトの上記ロ
ーラの間の部分にバネによって付勢されたテンションロ
ーラを圧接したこと２特徴とする静電記録装置用給紙装
置。(1) In a paper feeding device for an electrostatic recording device that feeds stacked sheets one by one, which has at least two rollers and a belt stretched between them, a portion of the belt between the rollers A paper feed device for an electrostatic recording device, characterized in that a tension roller biased by a spring is pressed into contact with the paper feed device.
る特許請求の範囲第１項記載の静電記録装置用給紙装置
。(2) A paper feeding device for an electrostatic recording device according to claim 1, wherein the tension of the spring is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57225300A JPS59114239A (en) | 1982-12-21 | 1982-12-21 | Paper feed device for electrostatic recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57225300A JPS59114239A (en) | 1982-12-21 | 1982-12-21 | Paper feed device for electrostatic recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59114239A true JPS59114239A (en) | 1984-07-02 |
Family
ID=16827173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57225300A Pending JPS59114239A (en) | 1982-12-21 | 1982-12-21 | Paper feed device for electrostatic recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59114239A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02249828A (en) * | 1989-03-20 | 1990-10-05 | Fujitsu Ltd | Sheet separating mechanism for paper feeder |
| JPH02249827A (en) * | 1989-03-20 | 1990-10-05 | Fujitsu Ltd | Sheet separating mechanism for paper feeder |
| US5213319A (en) * | 1992-02-24 | 1993-05-25 | International Paper Box Machine Company, Inc. | Adjustable feeder for shingling carton blanks from a stack and method for feeding therefrom |
| EP1103500A2 (en) * | 1999-11-26 | 2001-05-30 | Pfankuch Maschinen GmbH | Device for friction feeding of paper, carton blanks or similar |
-
1982
- 1982-12-21 JP JP57225300A patent/JPS59114239A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02249828A (en) * | 1989-03-20 | 1990-10-05 | Fujitsu Ltd | Sheet separating mechanism for paper feeder |
| JPH02249827A (en) * | 1989-03-20 | 1990-10-05 | Fujitsu Ltd | Sheet separating mechanism for paper feeder |
| US5213319A (en) * | 1992-02-24 | 1993-05-25 | International Paper Box Machine Company, Inc. | Adjustable feeder for shingling carton blanks from a stack and method for feeding therefrom |
| EP1103500A2 (en) * | 1999-11-26 | 2001-05-30 | Pfankuch Maschinen GmbH | Device for friction feeding of paper, carton blanks or similar |
| EP1103500A3 (en) * | 1999-11-26 | 2003-02-26 | Pfankuch Maschinen GmbH | Device for friction feeding of paper, carton blanks or similar |
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