JPH064467B2 - Paper feeding temporary stop device - Google Patents

Paper feeding temporary stop device

Info

Publication number
JPH064467B2
JPH064467B2 JP60152276A JP15227685A JPH064467B2 JP H064467 B2 JPH064467 B2 JP H064467B2 JP 60152276 A JP60152276 A JP 60152276A JP 15227685 A JP15227685 A JP 15227685A JP H064467 B2 JPH064467 B2 JP H064467B2
Authority
JP
Japan
Prior art keywords
paper
temporary stop
paper feed
driven roller
roller
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
Application number
JP60152276A
Other languages
Japanese (ja)
Other versions
JPS6216956A (en
Inventor
直人 向井
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP60152276A priority Critical patent/JPH064467B2/en
Publication of JPS6216956A publication Critical patent/JPS6216956A/en
Publication of JPH064467B2 publication Critical patent/JPH064467B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Registering Or Overturning Sheets (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は記録装置における給紙装置等のシート状用紙
(以下用紙と称する)を給紙する給紙装置に関する。詳
細には、用紙を給紙している途中で一時的に停止し、用
紙の給紙時期や斜行を調整する給紙一時停止装置に関す
る。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeding device such as a sheet feeding device in a recording device for feeding sheet-like paper (hereinafter referred to as paper). More specifically, the present invention relates to a paper feed temporary stop device that temporarily stops during paper feeding and adjusts the paper feed timing and skew.

従来の技術 前記給紙一時停止装置を具備する給紙装置において、常
時駆動されている駆動ローラと、該駆動ローラに一定圧
で押圧状に対向配置された従動ローラと、前記ローラの
下流に設けられかつ給紙通路を開閉するように設けられ
たストッパーシヤツタとからなる給紙一時停止装置が一
般に知られているが、給紙停止時に用紙が永久変形した
り、あるいは再給紙時に用紙と駆動ローラとがスリツプ
を生じたりして、しばしば用紙を適切に再給紙し難く、
また適切に再給紙し得るとしても、適用される用紙の種
類(大きさ、坪量、厚さ、摩擦係数等)が限定され、多
種類の用紙に適用し難いという問題点がある。
2. Description of the Related Art In a sheet feeding device including the sheet feeding temporary stop device, a driving roller that is constantly driven, a driven roller that is arranged to face the driving roller at a constant pressure, and is provided downstream of the driven roller. It is generally known that a paper feeding temporary stop device that includes a stopper shutter that is provided to open and close the paper feeding path is used. The drive rollers and slips often make it difficult to properly refeed the paper.
Even if the paper can be properly re-fed, there is a problem that it is difficult to apply it to many types of paper because the type of paper (size, basis weight, thickness, friction coefficient, etc.) to be applied is limited.

例えば、複写機等の記録装置の給紙装置において説明す
る。前記給紙装置は、像担持体に形成された原稿画像の
先端と記録紙の先端とが転写部で一致するように記録紙
を給紙するため、第3図に示す給紙一時停止装置を有し
ている。第3図は給紙停止状態に設定された給紙装置の
給紙一時停止装置を概略的に説明する図であり、図示さ
れていない転写部の上流でかつ給紙カセットの下流に設
けられている。図に示す給紙一時停止装置において、コ
ピープロセス制御によつて給紙カセットから矢印A方向
に給紙された記録紙Pは、常時駆動されている駆動ロー
ラ1および該駆動ローラ1にばね5で押圧状に対向配置
された従動ローラ2に達し、両ローラ1,2に挾持され
てさらに用紙ガイド4の間に給紙され、図に示すように
既に給紙通路L−Lを閉路しているストッパーシャッタ
3に突当つて停止される。記録紙Pが停止された後の所
定時間経過後に、ストツパーシヤツタ3は矢印B方向で
ある上方に移動されて給紙通路L−Lが開路され、記録
紙Pは駆動ローラ1と従動ローラ2とによつて再給紙さ
れて図示せざる転写部に給紙される。前記給紙通路L−
Lが開路される時点は、転写部に像担持体(図示せず)
に形成された原稿画像の先端が到達する時点に記録紙の
先端が到達し得るように設定されている。したがつて、
給紙一時停止装置が適切に作動されるならば、記録紙P
はその先端が転写部において原稿画像の先端とずれを生
じることなく給紙され、画像先端ずれを生じることはな
い。しかしながら、給紙停止時に記録紙Pが永久変形し
たり、あるいは再給紙時に記録紙Pと駆動ローラ1とが
スリップを生じたりして、記録紙Pを適切な時期に転写
部に給紙することができず、画像先端ずれをしばしば生
じている。また、特定の記録紙のみを適切に再給紙する
ことができても、他の記録紙を適切に再給紙することが
できない、等の問題点がある。
For example, a sheet feeding device of a recording device such as a copying machine will be described. The paper feeding device feeds the recording paper so that the leading edge of the original image formed on the image carrier and the leading edge of the recording paper are aligned at the transfer portion. Have FIG. 3 is a view for schematically explaining a paper feed temporary stop device of a paper feed device set to a paper feed stop state, and is provided upstream of a transfer unit (not shown) and downstream of a paper feed cassette. There is. In the paper feed temporary stop device shown in the figure, the recording paper P fed from the paper feed cassette in the direction of arrow A by the copy process control is driven by the drive roller 1 which is constantly driven and the spring 5 on the drive roller 1. It reaches the driven roller 2 arranged to face each other in a pressing manner, is sandwiched by both rollers 1 and 2, and is further fed between the sheet guides 4, and as shown in the figure, it has already closed the sheet feeding path L-L. The stopper shutter 3 is abutted and stopped. After a lapse of a predetermined time after the recording paper P is stopped, the stopper shutter 3 is moved upward in the direction of the arrow B to open the paper feed path L-L, and the recording paper P is driven by the driving roller 1 and the driven roller 2. Then, the paper is re-fed and fed to a transfer unit (not shown). The paper feed path L-
When L is opened, an image carrier (not shown) is attached to the transfer unit.
It is set so that the leading edge of the recording paper can reach when the leading edge of the original image formed in 1 reaches. Therefore,
If the paper feed suspension device is properly operated, the recording paper P
The paper is fed at its transfer end without being displaced from the front end of the document image at the transfer portion, and thus the front end of the image is not displaced. However, the recording paper P is permanently deformed when the paper feeding is stopped, or the recording paper P and the driving roller 1 slip when re-feeding, and the recording paper P is fed to the transfer portion at an appropriate time. It is not possible, and the image leading edge often occurs. Further, there is a problem that even if only a specific recording paper can be properly re-fed, another recording paper cannot be properly re-fed.

従来、前記問題点を解消するために、給紙停止時に記録
紙Pが変形しない程度に記録紙Pと駆動ローラ1とがス
リップを生じ、かつ再給紙時に記録紙Pと駆動ローラ1
とがスリップを生じない程度に記録紙Pが駆動ローラ1
にグリップされるように、従動ローラ2の押圧力を設定
することが行われている。しかしながら、前記設定作業
が繁雑で、適切に設定することが困難であり、しかも設
定された従動ローラ2の押圧力が一定であるため、前記
問題点を充分に解消することができない状況である。そ
こで、従動ローラを駆動ローラとで用紙を挟圧して送る
位置と駆動ローラから離れた位置とに切換変位可能と
し、両ローラとストッパーシャッタとの間に用紙の先端
を検出するフォトセンサを設けて、該センサの検出情報
に基づいて従動ローラを駆動ローラから離れた位置に切
換えると共にストッパーシャッタを用紙の先端に係合す
る給紙一時停止位置に切換えるようにし、そして、従動
ローラが駆動ローラから離れても用紙の先端がストッパ
ーシャッタに係合するまで駆動ローラによる用紙の送り
が行われるように、従動ローラ側の用紙ガイドに用紙を
駆動ローラに圧接させるためのフリクションバネを設け
た給紙一時停止装置が実開昭56-29048号公報により知ら
れている。これによれば、給紙停止時と再給紙時で用紙
の駆動ローラへの圧接力を大きく変えることができるか
ら、前記問題点は解消し得るが、従動ローラを駆動ロー
ラから離れた位置に切換えるためのフォトセンサとフリ
クションバネとを必要として装置が複雑になるだけでな
く、フリクションバネが駆動ローラや用紙を摩耗させる
と言う問題点が新たに生ずる。
Conventionally, in order to solve the above-mentioned problems, the recording paper P and the driving roller 1 slip to the extent that the recording paper P is not deformed when the paper feeding is stopped, and the recording paper P and the driving roller 1 are re-feeding.
The recording paper P is driven by the drive roller 1 to the extent that
The pressing force of the driven roller 2 is set so that the driven roller 2 can be gripped by. However, since the setting work is complicated, it is difficult to set appropriately, and the pressing force of the driven roller 2 that is set is constant, so that the problem cannot be solved sufficiently. Therefore, the driven roller can be switchably displaced between a position where the driven roller is pressed to feed the paper and a position where the driven roller is distant from the drive roller, and a photo sensor for detecting the leading edge of the paper is provided between both rollers and the stopper shutter. , The driven roller is switched to a position away from the drive roller based on the detection information of the sensor, and the stopper shutter is switched to a paper feed temporary stop position for engaging the leading edge of the paper, and the driven roller is separated from the drive roller. Even if the drive roller feeds the paper until the leading edge of the paper is engaged with the stopper shutter, the paper guide on the driven roller side is equipped with a friction spring to press the paper against the drive roller. The device is known from Japanese Utility Model Publication No. 56-29048. According to this, since the pressure contact force of the paper to the drive roller can be largely changed at the time of stopping the paper feeding and at the time of re-feeding, the above problem can be solved, but the driven roller is placed at a position away from the drive roller. Not only is the device complicated by the need for a photo sensor and a friction spring for switching, but a new problem arises that the friction spring wears the drive roller and the paper.

発明の目的 本発明の目的は、前記従来の問題点を解消することにあ
り、従動ローラの押圧力を簡単でかつ適切に設定するこ
とができ、用紙の種類によらず給紙停止時には永久変形
させることがなく停止し、かつ再給紙時には確実にグリ
ップして再給紙し、適切に給紙時期や斜行を調整するこ
とができて、しかも従動ローラを駆動ローラから離れた
位置に切換えるためのセンサや駆動ローラと用紙を摩耗
させるフリクションバネを必要としない給紙一時停止装
置を提供することにある。
An object of the present invention is to eliminate the above-mentioned problems of the related art, and the pressing force of the driven roller can be set easily and appropriately, and the permanent deformation occurs when the feeding is stopped regardless of the type of the sheet. Stops without stopping, and when re-feeding, surely grips and re-feeds, and it is possible to properly adjust the paper feed timing and skew, and switch the driven roller to a position away from the drive roller. SUMMARY OF THE INVENTION It is an object of the present invention to provide a paper feed temporary stop device that does not require a sensor or a drive roller and a friction spring that wears paper.

発明の構成 本発明者は、前記目的を達成すべく研究した結果、次の
知見を得た。従来の給紙一時停止装置において、従動ロ
ーラの押圧力は、駆動ローラにより用紙に作用する推進
力が給紙停止時にはストッパーシャッタに突当たった用
紙の剛性によりスリップして用紙に永久変形を生じさせ
ない大きさ以下に維持され、再給紙時には用紙に対する
給紙抵抗より大となるように、設定されていることが必
要である。また、用紙の種類(大きさ、坪量、厚さ、摩
耗係数等)によって剛性および給紙抵抗に大きな差があ
る。以上のことから多種類の用紙を適切に再給紙するた
めには、前記押圧力は、給紙停止時には小さく、再給紙
時には大きく設定されていることが必要である。という
知見を得た。
Structure of the Invention The present inventor has obtained the following findings as a result of research to achieve the above object. In the conventional paper feed temporary stop device, the pressing force of the driven roller does not slip due to the rigidity of the paper that abuts the stopper shutter when the propulsive force applied to the paper by the drive roller stops when the paper feed is stopped, and the paper does not permanently deform. It must be set to be smaller than the size and larger than the sheet feeding resistance for the sheet when re-feeding. Further, there is a large difference in rigidity and paper feed resistance depending on the type of paper (size, basis weight, thickness, wear coefficient, etc.). From the above, in order to appropriately re-feed various types of paper, it is necessary that the pressing force is set to be small at the time of feeding stop and to be large at the time of re-feeding. I got the knowledge.

本発明は前記知見に基いて完成されたものであつて、そ
の構成は、給紙通路に沿つて設けられかつ常時駆動され
る駆動ローラと、該駆動ローラに押圧状に対向配置され
た従動ローラと、前記両ローラによって送られるシート
の先端と係合してシートを前記駆動ローラに対しスリッ
プさせシートの進行を阻止する給紙一時停止位置とシー
トの先端との係合位置から外れた給紙一時停止解除位置
とに切換変位可能に設けられたストッパーシャッタから
なる給紙一時停止装置を具備する給紙装置において、前
記ストッパーシャッタが前記給紙一時停止解除位置に切
換えられると給紙一時停止位置に切換えられていたとき
より前記従動ローラの駆動ローラを押圧する力が大に切
換えられることを特徴とする給紙一時停止装置、であ
る。
The present invention has been completed based on the above-mentioned findings, and its constitution is a drive roller which is provided along a sheet feeding path and is constantly driven, and a driven roller which is arranged to face the drive roller in a pressing manner. And a sheet feeding position that is engaged with the leading ends of the sheets fed by the rollers to prevent the sheet from advancing by causing the sheet to slip with respect to the drive roller and the sheet feeding position deviated from the engaging position of the sheet leading edge. In a paper feeding device having a paper feeding temporary stop device which is provided with a stopper shutter that is switchably displaceable to a temporary stop releasing position, when the stopper shutter is switched to the paper feeding temporary stop releasing position, the paper feeding temporary stop position And a force for pressing the drive roller of the driven roller is switched to a greater degree than when the switching was made to.

実施例 本発明を実施例により説明する。EXAMPLES The present invention will be described with reference to Examples.

(第1実施例) 第1実施例を第1図に基いて説明する。(First Embodiment) A first embodiment will be described with reference to FIG.

第1図は、複写機に組み込まれた給紙装置において、給
紙停止状態に設定された給紙一時停止装置を概略的に説
明する図である。図において、第3図と同一の符号は同
一の機能部材を示す。6は支持部材で、軸受61によつ
て機体に揺動自在に設けられ、一端側にはばね5を介し
て従動ローラ2が、他端側にはソレノイド7が設けられ
ている。ソレノイド7は、可動鉄心71,励磁コイル7
2,電源73,スイッチ74等からなり、可動鉄心71
が連結ピン62を介して支持部材6の一端側に連結され
ている。8はストツパーで、従動ローラ2を設けた支持
部材6の一端側の上方への移動範囲を制限するものであ
る。なお、ソレノイド7は、スイッチ74が給紙停止時
にはオフされ再給紙時にはオンされるようにコピープロ
セス制御によつて作動され、可動鉄心71がスイッチ7
4のオフ作動によつて図に示す位置に設定され、スイッ
チ74のオン作動によつて矢印D方向である上方に移動
されるように構成されている。また、ばね5によつて作
用される従動ローラ2の押圧力は、従動ローラ2が図に
示す位置に設定される場合には、ストツパーシヤツタ3
により停止されている記録紙Pの剛性が非常に小さく、
永久変形し易いものであっても記録紙Pが永久変形せず
又、駆動ローラ1とが適切にスリップを生じる程度に小
さく設定されており、再給紙時、ばね5の固定端が下が
り従動ローラ2が下方にさらに押圧される場合には、給
紙抵抗が非常に大きい記録紙であつてもスリツプを生じ
ない程度に大きく設定されている。
FIG. 1 is a schematic diagram for explaining a paper feed temporary stop device set in a paper feed stop state in a paper feed device incorporated in a copying machine. In the figure, the same reference numerals as in FIG. 3 indicate the same functional members. Reference numeral 6 denotes a support member, which is swingably provided on the machine body by a bearing 61. The driven roller 2 is provided on one end side via a spring 5 and the solenoid 7 is provided on the other end side. The solenoid 7 includes a movable iron core 71 and an exciting coil 7.
2, a power source 73, a switch 74, etc., and a movable iron core 71
Are connected to one end side of the support member 6 via a connecting pin 62. Numeral 8 is a stopper for limiting the upward movement range of the one end side of the support member 6 provided with the driven roller 2. The solenoid 7 is operated by the copy process control so that the switch 74 is turned off when the sheet feeding is stopped and turned on when the sheet is fed again.
4 is set to the position shown in the figure by the OFF operation of the switch 4, and is moved upward in the direction of the arrow D by the ON operation of the switch 74. Further, the pressing force of the driven roller 2 exerted by the spring 5 is such that when the driven roller 2 is set at the position shown in the figure, the stopper shutter 3
The rigidity of the recording paper P stopped due to
Even if the recording sheet P is easily deformed permanently, the recording sheet P is not permanently deformed and is set to a small size so that the drive roller 1 appropriately slips, and when re-feeding, the fixed end of the spring 5 is lowered and driven. When the roller 2 is further pressed downward, it is set so large that slipping does not occur even if the recording paper has a very high paper feed resistance.

第1図に示す給紙一時停止装置は、前記のように構成さ
れており、その作動は次の通りである。複写機の複写作
動開始に伴いコピープロセス制御によつて、順次複写作
動が行われるが転写時、図示せざる給紙カセットから矢
印A方向に給紙された記録紙Pは、駆動ローラ1および
従動ローラ2に挾持されてさらに給紙され、その先端が
図に示すように既に給紙通路L−Lを閉路しているスト
ツパーシヤツタ3に突当り停止される。その際、従動ロ
ーラ2の駆動ローラ1に対する押圧力は、記録紙Pが変
形しない程度の推進力を与え得る状態でスリツプするよ
うに設定されているため、記録紙Pは変形することなく
停止される。記録紙Pが停止された後の所定時間経過後
に、図示されていない駆動手段によつてストツパーシヤ
ツタ3が矢印B方向に上昇され、給紙通路L−Lが開路
されるとともに、ソレノイド7のスイツチ74がオンさ
れる。スイツチ74がオンされると励磁コイル72が励
磁され、可動鉄心71が上昇される。可動鉄心71に連
結された支持部材6は、従動ローラ2を設けた1端側が
矢印C方向に下降し、ばね5を圧縮する。ばね5が圧縮
されることによつて従動ローラ2の駆動ローラ1に対す
る押圧力は、給紙抵抗の大きい記録紙Pであつても駆動
ローラ1との間にスリップを生じることがなく確実にグ
リツプされるように設定される。停止されている記録紙
Pは、ストツパーシヤツタ3が給紙通路L−Lを開路す
ると直に、駆動ローラ1によつて確実に再給紙される。
以上により、給紙カセットから給紙された記録紙Pは、
給紙停止時に変形することがなく、しかも再給紙時に駆
動ローラ1との間にスリツプを生じることがないため、
転写部に適切に給紙される。
The paper feed temporary stop device shown in FIG. 1 is configured as described above, and its operation is as follows. When the copying operation of the copying machine is started, the copying operation is sequentially performed by the copy process control. However, at the time of transfer, the recording paper P fed in the direction of arrow A from the unillustrated paper feeding cassette is driven by the driving roller 1 and the driven roller. The paper is further held by the roller 2 and is fed, and the leading end thereof is stopped by hitting the stopper shutter 3 which has already closed the paper feed passage L-L as shown in the figure. At that time, the pressing force of the driven roller 2 against the driving roller 1 is set so as to slip in a state in which the propulsive force that does not deform the recording paper P can be applied, and therefore the recording paper P is stopped without being deformed. It After a lapse of a predetermined time after the recording paper P is stopped, the stopper shutter 3 is lifted in the direction of the arrow B by a driving means (not shown) to open the paper feed passage L-L and the solenoid 7 is opened. The switch 74 is turned on. When the switch 74 is turned on, the exciting coil 72 is excited and the movable iron core 71 is raised. The support member 6 connected to the movable iron core 71 has its one end side provided with the driven roller 2 descend in the direction of arrow C to compress the spring 5. Since the spring 5 is compressed, the pressing force of the driven roller 2 against the drive roller 1 does not cause slip between the driven roller 2 and the drive roller 1 even if the recording paper P has a large paper feed resistance, and the gripping is ensured. Is set to be done. The stopped recording paper P is reliably re-fed by the drive roller 1 as soon as the stopper shutter 3 opens the paper feed path L-L.
As described above, the recording paper P fed from the paper feeding cassette is
It is not deformed when paper feeding is stopped, and there is no slip between drive roller 1 when paper is re-fed.
Paper is properly fed to the transfer section.

(第2実施例) 第2実施例を第2図に基いて説明する。(Second Embodiment) A second embodiment will be described with reference to FIG.

第2図は、第1図と同様に給紙停止状態に設定された給
紙一時停止装置を概略的に説明する図である。図におい
て第1図と同一の符号は同一の機能部材を示す。図に示
す給紙一時停止装置は、一端側にばね5を介して従動ロ
ーラ2が設けられている支持部材6の他端側にストツパ
ーシヤツタ3が設けられ、ストツパーシヤツタ3により
給紙通路L−Lを開閉する作動と従動ローラ2の押圧力
を変化させる作動とが一体的に連動するように構成され
ていることを特徴とするものである。
FIG. 2 is a diagram schematically illustrating the paper feed temporary stop device that is set in the paper feed stop state as in FIG. In the figure, the same symbols as in FIG. 1 indicate the same functional members. In the paper feeding temporary stop device shown in the figure, a stopper shutter 3 is provided at the other end of a support member 6 having a driven roller 2 provided at one end with a spring 5 interposed therebetween, and the stopper shutter 3 allows the paper feed path to pass. It is characterized in that the operation of opening and closing L-L and the operation of changing the pressing force of the driven roller 2 are integrally linked.

第2図に示す給紙一時停止装置は前記のように構成され
ており、ストツパーシヤツタ3の作動を除けば第1図に
示すものと同様に作動される。すなわち、給紙停止時、
図に示すようにストツパーシヤツタ3は給紙通路L−L
を閉路する状態に設定され、従動ローラ2は記録紙Pが
剛性の非常に小さいものであつても変形しない程度の推
進力を受ける状態で駆動ローラ1に押圧されているた
め、図示せざる給紙カセットによつて矢印A方向に給紙
された記録紙Pは、変形することなく停止される。ま
た、再給紙時、ソレノイド7が励磁され支持部材6が矢
印C方向に揺動されると、ストツパーシヤツタ3が上昇
されて給紙通路L−Lが開路され、同時にばね5が圧縮
されて従動ローラ2の押圧力が給紙抵抗の大きい記録紙
Pであつても駆動ローラ1との間にスリツプを生じるこ
とがなく確実にグリツプされるように設定される。停止
されている記録紙Pは、ストツパーシヤツタ3が給紙通
路L−Lを開路すると直に、駆動ローラ1によつて確実
に再給紙される。以上により、給紙カセットから給紙さ
れた記録紙は、第1図に示すものと同様に適切に転写部
に給紙される。
The paper feed temporary stop device shown in FIG. 2 is configured as described above, and operates in the same manner as that shown in FIG. 1 except for the operation of the stopper shutter 3. That is, when paper feeding is stopped,
As shown in the figure, the stopper shutter 3 has a sheet feeding path L-L.
Is set to a closed state, and the driven roller 2 is pressed by the drive roller 1 in a state of receiving a propulsive force that does not deform even if the recording paper P has a very small rigidity, so it is not shown in the drawing. The recording paper P fed in the direction of arrow A by the paper cassette is stopped without being deformed. When re-feeding, when the solenoid 7 is excited and the support member 6 is swung in the direction of arrow C, the stopper shutter 3 is lifted to open the feed passage L-L, and at the same time the spring 5 is compressed. Therefore, the pressing force of the driven roller 2 is set so that even the recording paper P having a large paper feed resistance is reliably gripped without causing a slip between the driven roller 2 and the drive roller 1. The stopped recording paper P is reliably re-fed by the drive roller 1 as soon as the stopper shutter 3 opens the paper feed path L-L. As described above, the recording paper fed from the paper feed cassette is appropriately fed to the transfer section as in the case shown in FIG.

本実施例は、ソレノイドで作動される支持部材にストツ
パーシヤツタおよび従動ローラが設けられているため、
ストツパーシヤツタにより給紙通路L−Lを開閉する作
動と従動ローラ2の押圧力を変化させる作動とを同時に
行うことができ、またストツパーシヤツタ3を作動する
駆動手段を別途設ける必要がなく、第1実施例よりも適
切に再給紙し得るとともに、給紙一時停止装置の構造が
簡単なものである。
In this embodiment, since the support member operated by the solenoid is provided with the stopper shutter and the driven roller,
The operation of opening and closing the sheet feeding path L-L by the stopper shutter and the operation of changing the pressing force of the driven roller 2 can be performed at the same time, and it is not necessary to separately provide a drive means for operating the stopper shutter 3. Refeeding can be performed more appropriately than in the first embodiment, and the structure of the paper feed temporary stop device is simpler.

各実施例において従動ローラを支持する支持部材は、揺
動可能に設けられているが、上下動可能に設けられてい
てもよい。また、従動ローラは、ばねによつて弾性的に
支持されているが、必ずしも弾性的に支持されていなく
てもよい。
In each of the embodiments, the support member that supports the driven roller is swingably provided, but may be vertically movable. Further, the driven roller is elastically supported by the spring, but need not necessarily be elastically supported.

発明の効果 本発明の給紙一時停止装置は、実施例においても説明し
たように、常時駆動される駆動ローラに記録紙を押圧す
る従動ローラの押圧力が給紙停止時と再給紙時とで異な
つて、再給紙時には大とるように設定されているため、
従動ローラを駆動ローラから離れた位置に切換えるため
のセンサや駆動ローラと用紙を摩耗させるフリクション
バネを必要としないから装置が簡単で、しかも用紙を種
類によらず給紙停止時には永久変形させることがなく停
止し、かつ再給紙時には確実にグリツプして再給紙する
ことができ、給紙時期に適切に給紙することができる。
また、前記押圧力は、給紙停止時には剛性の小さい記録
紙でも変形しない程度にスリツプを生じるように小さく
設定し、再給紙時には給紙抵抗の大きい記録紙であつて
も駆動ローラとの間にスリツプを生じることがないよう
に大きく設定すればよいため、従来のもののように繁雑
な作動を必要とすることなく簡単に設定することができ
る。
EFFECTS OF THE INVENTION As described in the embodiments, the paper feeding temporary stop device according to the present invention is such that the pressing force of the driven roller that presses the recording paper against the driving roller that is constantly driven is different when the paper feeding is stopped and when the paper is re-fed. However, since it is set to take a large amount when re-feeding,
The device is simple because it does not require a sensor for switching the driven roller to a position away from the drive roller or a friction spring that wears the drive roller and the paper, and the paper can be permanently deformed regardless of the type when the paper feed is stopped. When the sheet is re-fed, the sheet can be reliably gripped and re-fed, and the sheet can be properly fed at the time of feeding.
Further, the pressing force is set to a small value so that slips are not generated even when the recording paper having a low rigidity is deformed when the paper feeding is stopped, and when the paper is re-fed, even if the recording paper has a large paper feeding resistance, the pressing force is not applied to the drive roller. Since it is only necessary to set a large value so as not to cause slippage, it is possible to easily set it without requiring a complicated operation unlike the conventional one.

以上のように、本発明は前記のように構成することによ
つて、前記目的を達成することができた。
As described above, the present invention can achieve the above-mentioned object by being configured as described above.

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

第1図は本発明の第1実施例の概略的な説明図,第2図
は同じく第2実施例の概略的な説明図,第3図は従来例
の概略的な説明図である。 1…駆動ローラ, 2…従動ローラ, 3…ストッパーシャッタ, 5…ばね, 6…支持部材, 7…ソレノイド, P…記録紙。
FIG. 1 is a schematic explanatory view of a first embodiment of the present invention, FIG. 2 is a schematic explanatory view of the second embodiment, and FIG. 3 is a schematic explanatory view of a conventional example. 1 ... Drive roller, 2 ... Following roller, 3 ... Stopper shutter, 5 ... Spring, 6 ... Support member, 7 ... Solenoid, P ... Recording paper.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】給紙通路に沿って設けられかつ常時駆動さ
れる駆動ローラと、該駆動ローラに押圧状に対向配置さ
れた従動ローラと、前記両ローラによって送られるシー
トの先端と係合してシートを前記駆動ローラに対しスリ
ップさせシートの進行を阻止する給紙一時停止位置とシ
ートの先端との係合位置から外れた給紙一時停止解除位
置とに切換変位可能に設けられたストッパーシャッタか
らなる給紙一時停止装置を具備する給紙装置において、
前記ストツパーシャッタが前記給紙一時停止解除位置に
切換えられると給紙一時停止位置に切換えられていたと
きより前記従動ローラの駆動ローラを押圧する力が大に
切換えられることを特徴とする給紙一時停止装置。
1. A drive roller which is provided along a paper feed path and is constantly driven, a driven roller which is arranged to face the drive roller in a pressing manner, and a leading end of a sheet which is fed by the both rollers. Stopper shutter provided so as to be switchable between a paper feed temporary stop position for slipping the sheet against the drive roller to prevent the sheet from advancing and a paper feed temporary stop release position out of the engagement position with the leading edge of the sheet. In a paper feeding device having a paper feeding temporary stop device consisting of
When the stopper shutter is switched to the paper feed temporary stop position, the force for pressing the drive roller of the driven roller is switched to a greater extent than when the stop shutter was switched to the paper feed temporary stop position. Pause device.
【請求項2】前記従動ローラは切換作動部材によって切
換揺動可能に設けられた支持部材の一端側に弾性部材を
介して設けられている特許請求の範囲第1項に記載の給
紙一時停止装置。
2. The paper feed temporary stop according to claim 1, wherein the driven roller is provided on one end side of a support member provided to be switchable by a switching operation member via an elastic member. apparatus.
【請求項3】前記従動ローラとストッパーシャッタとが
前記支持部材の異なる端側に設けられている特許請求の
範囲第2項に記載の給紙一時停止装置。
3. The paper feed temporary stop device according to claim 2, wherein the driven roller and the stopper shutter are provided at different end sides of the support member.
JP60152276A 1985-07-12 1985-07-12 Paper feeding temporary stop device Expired - Lifetime JPH064467B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60152276A JPH064467B2 (en) 1985-07-12 1985-07-12 Paper feeding temporary stop device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60152276A JPH064467B2 (en) 1985-07-12 1985-07-12 Paper feeding temporary stop device

Publications (2)

Publication Number Publication Date
JPS6216956A JPS6216956A (en) 1987-01-26
JPH064467B2 true JPH064467B2 (en) 1994-01-19

Family

ID=15536967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60152276A Expired - Lifetime JPH064467B2 (en) 1985-07-12 1985-07-12 Paper feeding temporary stop device

Country Status (1)

Country Link
JP (1) JPH064467B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63116456U (en) * 1987-01-21 1988-07-27

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421446B2 (en) * 1972-08-28 1979-07-31
JPS5629048U (en) * 1979-08-08 1981-03-19

Also Published As

Publication number Publication date
JPS6216956A (en) 1987-01-26

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