JP2001097599A - Method for feeding paper and recording apparatus - Google Patents
Method for feeding paper and recording apparatusInfo
- Publication number
- JP2001097599A JP2001097599A JP27674999A JP27674999A JP2001097599A JP 2001097599 A JP2001097599 A JP 2001097599A JP 27674999 A JP27674999 A JP 27674999A JP 27674999 A JP27674999 A JP 27674999A JP 2001097599 A JP2001097599 A JP 2001097599A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- roller
- feeding
- sheet
- fed
- 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.)
- Granted
Links
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Registering Or Overturning Sheets (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、プリンタ等の記録
装置に関し、特に、給紙ローラにより給送される用紙を
搬送ローラに食い付かせた後に吐き出し動作を行ってス
キューを直すスキュー取り時に起こる給紙ローラと用紙
間のスリップによる用紙へのローラ痕の付着を防止する
と共に、スキュー取り中の用紙の先端と搬送ローラのニ
ップ部との間で擦り合いによって発生する音のレベルを
低減させて静音化を図った給紙方法及び記録装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus such as a printer, and more particularly to a recording apparatus such as a printer. Prevents roller marks from adhering to the paper due to slippage between the paper feed roller and the paper, and reduces the level of noise generated by friction between the leading edge of the paper being skewed and the nip of the transport roller. The present invention relates to a paper feeding method and a recording apparatus that achieve a silent operation.
【０００２】[0002]
【従来の技術】従来の給紙装置は、ホッパに複数枚積層
された用紙を、最上位の用紙から１枚づつ給送する方式
が一般的に採用されており、給紙ローラに当接する分離
パッドを給送路に配置し、分離パッドと用紙との摩擦を
利用して１枚つづ給送するものである。用紙をホッパか
ら１枚づつ給送する方式では、給送路に対して斜めに送
られる、いわゆるスキューを起し易い。用紙がスキュー
した状態で給送されると紙詰まりし易くなり、また用紙
の予定位置に印字が行われなくなるなどの不具合が発生
する。この対策として、記録する前にスキュー取りが行
なわれている。スキュー取りには、停止した搬送ローラ
に用紙の前端を突き当て、その状態で給紙ローラを短時
間回転させる方式、搬送ローラに食いつかせ、給紙ロー
ラを停止させた状態で搬送ローラを逆転させて吐き出し
をする食い付き吐出し方式などがある。2. Description of the Related Art A conventional paper feeding apparatus generally employs a system in which a plurality of sheets stacked on a hopper are fed one by one from a top sheet, and a separation sheet contacting a sheet feeding roller. The pads are arranged in a feeding path, and the sheets are fed one by one using friction between the separation pad and the paper. In a method of feeding sheets one by one from a hopper, so-called skew, which is sent obliquely to a feeding path, is likely to occur. If the paper is fed in a skewed state, paper jams are likely to occur, and printing will not be performed at the expected position of the paper. As a countermeasure, skew is removed before recording. For skew removal, the leading edge of the paper is abutted against the stopped transport roller, and the feed roller is rotated for a short time in that state.The transport roller is engaged, and the transport roller is rotated in reverse with the feed roller stopped. There is a bite-discharge method that discharges the food.
【０００３】従来の食い付き吐出し方式のスキュー取り
の概要を図１０〜図１２により説明する。図１０におい
て、スキュー取りは、搬送ローラ４に用紙Ｐを食い付か
せ、その後給紙ローラ２を停止させた状態で搬送ローラ
４を逆転させ、搬送ローラ４との食い付きを解除、つま
り用紙Ｐを給紙ローラ側に吐き出してスキューを直す。
スキュ取り後の用紙Ｐの頭出しは、用紙Ｐに対して記録
開始位置をセットするもので、搬送ローラ４の回転制御
によって行われる。図１１において、頭出しが開始され
ると搬送ローラ４が設定したステップ数を正転し用紙Ｐ
を一定長Ｌo送る。この間、給紙ローラ２は、搬送ロー
ラ４と同期回転するが、頭出し完了時点では図示の如く
分離パッド３と当接状態にある。給紙ローラ２をリセッ
ト位置に待機させる為、図１２に示すように給紙ローラ
２の弦部分２ａを分離パッド３に対向させる位置まで給
紙ローラ２を更に一定のステップ数を正転させる。The outline of skew removal by the conventional biting discharge method will be described with reference to FIGS. In FIG. 10, the skew is removed by causing the transport roller 4 to bite the paper P, and then rotating the transport roller 4 in a reverse direction in a state where the paper feed roller 2 is stopped, thereby releasing the bite with the transport roller 4, that is, the paper P To the feed roller side to correct the skew.
The cueing of the sheet P after skew removal is for setting the recording start position for the sheet P, and is performed by controlling the rotation of the transport roller 4. In FIG. 11, when the cueing is started, the number of steps set by the transport roller 4 is rotated forward and the paper P
Is sent for a fixed length Lo. During this time, the paper feed roller 2 rotates synchronously with the transport roller 4, but is in contact with the separation pad 3 as shown in the figure at the time of completion of cueing. In order to make the paper feed roller 2 stand by at the reset position, the paper feed roller 2 is further rotated forward by a certain number of steps until the chord portion 2a of the paper feed roller 2 faces the separation pad 3, as shown in FIG.
【０００４】[0004]
【発明が解決しようとする課題】従来の食い付き吐き出
し方式のスキュー取りは、給紙ローラ側で用紙の給送停
止状態で行なわれるが、一定長の前出し完了により搬送
ローラ４を停止した後、給紙ローラ２がリセット位置へ
回転すると、給紙ローラ２と用紙の間にスリップが起こ
り、用紙Ｐにローラ痕が付く。また、スキュー取り中に
は、搬送ローラによる逆送りの力が用紙に加わるので、
この力が給紙ローラ２の用紙Ｐに対するグリップ力に打
ち勝って給紙ローラ２と用紙Ｐの間にスリップが起こ
り、用紙Ｐにローラ痕が付く。また、スキュー取り後の
頭出しでも同様の事が起こる。特に、ＯＨＰシートは、
給紙ローラ２との摩擦係数μが高い為、スリップが起る
と用紙にローラ痕が付き易くなる。また、用紙の吐出し
後、用紙の先端と搬送ローラのニップ部との間で擦り合
いが起こり、音を発生する。この擦り音のレベルは、搬
送ローラの回転速度に関係し、速度が速くなる程、大き
くなる傾向になり、騒音として感じ易くなる為、静音化
対策が望まれていた。The skew removal by the conventional biting discharge method is performed in a state in which the feeding of the sheet is stopped on the sheet feeding roller side. When the paper feed roller 2 rotates to the reset position, a slip occurs between the paper feed roller 2 and the paper, and a roller mark is formed on the paper P. Also, during skew removal, the reverse feed force by the transport rollers is applied to the paper,
This force overcomes the grip force of the paper feed roller 2 on the paper P, causing a slip between the paper feed roller 2 and the paper P, and a roller mark is formed on the paper P. Also, the same phenomenon occurs in cueing after skew removal. In particular, OHP sheets
Since the coefficient of friction μ with the paper feed roller 2 is high, when a slip occurs, roller marks are easily formed on the paper. Further, after the discharge of the paper, friction occurs between the leading edge of the paper and the nip portion of the transport roller, and a sound is generated. The level of the rubbing noise is related to the rotation speed of the transport roller, and tends to increase as the speed increases, and the noise tends to be easily perceived. Therefore, measures to reduce noise have been desired.
【０００５】本発明の目的は、スキュー取り中に給紙ロ
ーラと用紙間のスリップによって用紙にローラ痕の付く
のを防止した給紙方法及び記録装置を提供することにあ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a paper feeding method and a recording apparatus in which a roller mark is prevented from being formed on a paper due to a slip between the paper feeding roller and the paper during skew removal.
【０００６】本発明の他の目的は、スキュー取り中の用
紙の先端と搬送ローラのニップ部との間で擦り合いによ
って発生する音のレベルを低減させて静音化を図った給
紙方法及び記録装置を提供することにある。Another object of the present invention is to provide a paper feeding method and a recording method in which the level of a sound generated by rubbing between the leading edge of a sheet being skewed and a nip portion of a conveying roller is reduced to reduce noise. It is to provide a device.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、側視
Ｄ型の給紙ローラにより給送される用紙を搬送ローラに
てスキュー取りをした後に給送する給紙方法において、
スキュー取り時に搬送ローラおよび給紙ローラを正転さ
せ、給送される用紙を搬送ローラに食い付かせて前出し
動作を行い、該前出し動作中に給紙ローラをリセット位
置で停止させた後、搬送ローラのみを一定量逆転させ、
さらに搬送ローラと給紙ローラを逆転させて用紙の逆送
り動作を行い、該搬送ローラに用紙を食い付かせた状態
で給紙ローラを停止させ、更に搬送ローラを逆転させて
用紙の吐出し動作を行うことを特徴とする。請求項１の
発明によれば、スキュー取り時の用紙の吐き出しによっ
て停止している給紙ローラと用紙との間にスリップを生
ずるが、このスリップは用紙の移動によって起こる為、
用紙上に付くスリップ痕も一箇所に集中せず、分散さ
れ、目立ち難くなる。According to a first aspect of the present invention, there is provided a sheet feeding method for feeding a sheet fed by a D-type sheet feeding roller after skewed by a feeding roller and then feeding the sheet.
After the transport roller and the paper feed roller are rotated forward during skew removal, the paper to be fed is fed to the transport roller to perform the advance feeding operation, and after the paper feed roller is stopped at the reset position during the advance feeding operation. , Reverse only the transport roller by a certain amount,
In addition, the transport roller and the paper feed roller are rotated in reverse to perform a reverse feed operation of the paper, the paper feed roller is stopped in a state where the paper is bitten by the transport roller, and the transport roller is further rotated in reverse to discharge the paper. Is performed. According to the first aspect of the present invention, a slip occurs between the paper feed roller and the paper stopped at the time of skew removal when the paper is ejected.
Slip marks on the paper are not concentrated at one place but are dispersed and become less noticeable.
【０００８】請求項２の発明は、請求項１の発明におい
て、用紙の前出し動作は、給紙ローラと搬送ローラの間
で給送される用紙の先端を検知し、該紙検知から設定さ
れたステップ数の搬送ローラの回転により行われること
を特徴とする。請求項２の発明によれば、ホッパー内に
ある用紙の積層量の多少によって給紙ローラのピックア
ップの位置ずれが生ずる機構的な問題や給紙ローラから
用紙検知器までの用紙搬送路や用紙検知器の取付け部な
どに製造上のバラツキなどがあっても搬送ローラの用紙
の食い付き送り動作中に給紙ローラをリセット位置に待
機させることができ、続くスキュー取りの搬送ローラと
給紙ローラによる逆送りの為の回転タイミングが合わせ
易くなる。According to a second aspect of the present invention, in the first aspect of the present invention, the leading-out operation of the sheet is performed by detecting the leading edge of the sheet fed between the sheet feeding roller and the conveying roller, and setting the sheet leading edge. The rotation is performed by the number of steps of the conveying roller. According to the second aspect of the present invention, there is a mechanical problem that the position of the pickup of the paper feed roller is shifted depending on the amount of stacked paper in the hopper, a paper conveyance path from the paper feed roller to the paper detector, and a paper detection. Even if there is a manufacturing variation in the mounting part of the container, etc., the feed roller can be made to stand by at the reset position during the feeding operation of the paper by the transport roller, and the subsequent skew removal by the transport roller and the paper feed roller Rotation timing for reverse feed can be easily adjusted.
【０００９】請求項３の発明は、請求項１の発明におい
て、搬送ローラによる用紙の食い付き送り動作が給紙ロ
ーラのリセット動作の終了より後に終了するよう予め設
定されていることを特徴とする。請求項３の発明によれ
ば、前述の機構的な問題や製造上のバラツキを見越して
給紙ローラをリセット位置に待機させるのに十分な用紙
の食い付き送り量を搬送ローラの回転量として予めセッ
トすることで、スキュー取りから頭出しの一連の動作の
中で用紙の給送停止状態で、例えばリセット動作で給紙
ローラが回転することを全く無くすことができ、用紙上
の一箇所に集中してできるローラ痕を防止できる。According to a third aspect of the present invention, in the first aspect of the present invention, the sheet feeding operation by the transport roller is set in advance to end after the end of the sheet feeding roller reset operation. . According to the third aspect of the present invention, a sheet feeding amount sufficient to allow the sheet feeding roller to wait at the reset position in anticipation of the above-described mechanical problems and manufacturing variations is set in advance as the rotation amount of the conveying roller. By setting, during a series of operations from skew removal to cueing, the paper feed roller can be completely prevented from rotating during a paper feed stop state, for example, by a reset operation, and it can be concentrated on one place on the paper Roller marks can be prevented.
【００１０】請求項４の発明は、請求項１〜３のいずれ
かに記載の発明において、用紙の逆送り動作は、搬送ロ
ーラと給紙ローラの逆転を同時に行うことを特徴とす
る。請求項４の発明によれば、搬送ローラと給紙ローラ
の逆転のタイミングを同じにすることで、制御がし易く
なる。According to a fourth aspect of the present invention, in the first aspect of the present invention, in the reverse feeding operation of the sheet, the transport roller and the paper feed roller are simultaneously rotated in reverse. According to the fourth aspect of the present invention, control is facilitated by setting the timing of the reverse rotation of the transport roller and the paper feed roller to be the same.
【００１１】請求項５の発明は、請求項１〜３のいずれ
かに記載の発明において、用紙の逆送り動作は、搬送ロ
ーラの逆転開始から所定タイミング遅らせて給紙ローラ
を逆転させることを特徴とする。請求項５の発明によれ
ば、用紙の吐き出し時の給紙ローラの駆動時間を短く
し、給紙ローラの駆動機構から出る音の発生時間を少な
くすることで騒音の低減が図れる。According to a fifth aspect of the present invention, in the invention according to any one of the first to third aspects, in the reverse feed operation of the sheet, the paper feed roller is rotated backward by a predetermined timing from the start of the reverse rotation of the transport roller. And According to the fifth aspect of the present invention, noise can be reduced by shortening the driving time of the paper feeding roller at the time of discharging the paper and reducing the time of generating the sound emitted from the driving mechanism of the paper feeding roller.
【００１２】請求項６の発明は、請求項１〜５のいずれ
かに記載の発明において、用紙の吐出し動作は、搬送ロ
ーラの回転を通常の速度より低速に切り替えて行うこと
を特徴とする。請求項６の発明によれば、用紙が搬送ロ
ーラから吐き出されると用紙の先端と搬送ローラのニッ
プ部との間で擦り合いが起こり、音を発生するが、搬送
ローラを低速にすることで、音レベルを低くすることが
でき、騒音が軽減される。この搬送ローラの速度の切り
替えは、少なくとも用紙の吐き出し以降、つまり擦り音
が発生する時点で低速になっていれば良いので、全体の
給紙時間への影響はほとんど無く、静音化が図れる。According to a sixth aspect of the present invention, in the first aspect of the present invention, the sheet discharging operation is performed by switching the rotation of the transport roller to a speed lower than a normal speed. . According to the invention of claim 6, when the paper is discharged from the transport roller, rubbing occurs between the leading edge of the paper and the nip portion of the transport roller, and a sound is generated. The sound level can be reduced, and noise is reduced. Switching of the speed of the transport roller is only required to be low at least after the ejection of the sheet, that is, at the time when the rubbing noise is generated, so that there is almost no effect on the entire sheet feeding time and the noise can be reduced.
【００１３】請求項７の発明は、側視Ｄ型の給紙ローラ
により給送される用紙を搬送ローラにてスキュー取りを
した後に給送し記録を行う記録装置の給紙方法におい
て、スキュー取り時に搬送ローラおよび給紙ローラを正
転させ、給送される用紙を搬送ローラに一定長食い付か
せ、給紙ローラを停止させた後、搬送ローラの回転を通
常の速度より低速に切り替えて逆転させ、用紙を逆送り
して吐出し動作を行うことを特徴とする。請求項７の発
明によれば、用紙が搬送ローラから吐き出されると用紙
の先端と搬送ローラのニップ部との間で擦り合いが起こ
り、音を発生するが、用紙の吐き出し以降を低速にする
ことにより、上記の音レベルを低下させることができ、
騒音が軽減され、使用環境に適合させ易くなる。According to a seventh aspect of the present invention, there is provided a paper feeding method for a recording apparatus, in which a sheet fed by a D-type sheet feeding roller is skewed by a conveying roller and then fed and recorded. At times, the feed roller and feed roller are rotated forward, the fed paper is bitten by the feed roller for a certain length, and after stopping the feed roller, the rotation of the feed roller is switched to a lower speed than the normal speed to reverse. Then, the paper is fed backward to perform a discharging operation. According to the seventh aspect of the present invention, when the sheet is ejected from the transport roller, rubbing occurs between the leading edge of the sheet and the nip portion of the transport roller, and a sound is generated, but the speed after the ejection of the sheet is reduced. By this, the above sound level can be reduced,
Noise is reduced and it is easier to adapt to the usage environment.
【００１４】請求項８の発明に係る記録装置は、請求項
１〜７のいずれかに記載されたスキュー取り動作モード
を有し、該モードが選択可能であることを特徴とする。
請求項８の発明によれば、ユーザがスキュー取りモード
を選択できるので、ローラ痕を目立たなくしたいときに
便利である。更に、用紙の吐き出し以降を低速に切り替
えるスキュー取りモードでは、搬送ローラ部で発生する
音も低くできる。An eighth aspect of the present invention provides a recording apparatus having the skew removing operation mode described in any one of the first to seventh aspects, wherein the mode can be selected.
According to the invention of claim 8, since the user can select the skew removal mode, it is convenient when it is desired to make the roller mark inconspicuous. Further, in the skew removal mode in which the speed after the ejection of the paper is switched to a low speed, the noise generated in the transport roller unit can be reduced.
【００１５】請求項９の発明は、請求項８の発明におい
て、スキュー取りモードが紙種によって選択できること
を特徴とする。請求項９の発明によれば、用紙の種類に
よってローラ痕が目立ったり、吐き出しによって搬送ロ
ーラのニップ部との間で擦り音が発生したりするので、
例えばＯＨＰシートなどで代表される用紙ではローラ痕
が付き易く目立つので、スキュー取りモードを選択し、
普通紙などで代表される用紙ではローラ痕が付き難い
か、付いても目立ち難い為、前記モードを選択しないこ
とができる。A ninth aspect of the present invention is characterized in that, in the eighth aspect of the present invention, the skew removal mode can be selected according to the type of paper. According to the ninth aspect of the present invention, roller marks are conspicuous depending on the type of paper, and a rubbing noise is generated between the paper and the nip portion of the transport roller due to discharge.
For example, roller marks are likely to appear on paper represented by OHP sheets and the like, so the skew removal mode is selected.
In the case of paper represented by plain paper or the like, roller marks are hardly formed or are hardly noticeable, so that the above-mentioned mode can not be selected.
【００１６】[0016]
【発明の実施の形態】本発明の実施例について図面を参
照しながら説明する。図１は本発明に係る記録装置の要
部を示す側面図である。給紙装置ＳＦは、複数枚積層さ
れた用紙Ｐを１枚づつ給送する機能を有し、主な構成と
して複数枚の用紙Ｐを積層してセットするホッパ１と、
ホッパ１の最上位の用紙Ｐを１枚づつピックアップして
給送する給紙ローラ２と、最上位の用紙Ｐと共に重送さ
れる用紙を分離する分離パッド３とを備えている。給紙
ローラ２は、用紙Ｐと接触する円弧部と用紙から離間す
る直線部とを有する側視Ｄ型の形状になっており、給紙
ローラ２の円弧部分と分離パッドとの当接状態で１回転
する間に１枚の用紙Ｐが用紙ガイド８を通して搬送ロー
ラ４へ給送される。用紙Ｐのスキュー取りを行った後、
搬送ローラ４は、従動ローラ５との協働作用により一定
長の頭出し動作を行ってから記録タイミングに合わせて
用紙Ｐを記録ヘッド６の領域に送り、記録を行う。記録
された用紙Ｐは、排出ローラ７によって排出される。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a main part of a recording apparatus according to the present invention. The paper feeding device SF has a function of feeding a plurality of stacked papers P one by one, and a hopper 1 for stacking and setting a plurality of papers P as main components;
The hopper 1 includes a paper feed roller 2 that picks up and feeds the uppermost sheet P one by one and feeds the sheet P, and a separation pad 3 that separates a sheet that is double fed together with the uppermost sheet P. The paper feed roller 2 has a D-shape in side view having an arc portion that comes into contact with the paper P and a linear portion that is separated from the paper, and is in a contact state between the arc portion of the paper feed roller 2 and the separation pad. During one rotation, one sheet of paper P is fed to the transport roller 4 through the paper guide 8. After skew removal of paper P,
The transport roller 4 performs a cue operation of a fixed length by the cooperation of the driven roller 5 and then feeds the paper P to the area of the recording head 6 in synchronization with the recording timing to perform recording. The recorded paper P is discharged by the discharge roller 7.
【００１７】本発明は、スキュー取り時に給紙ローラに
よるローラ痕が用紙に付くのを防止すると共に、スキュ
ー取り中の搬送ローラと従動ローラとのこすれ音を低減
させる為の給送制御に特徴を有するもので、その実施例
を図面により説明する。図２は紙検知の説明図、図３は
前出しの説明図、図４は逆転の説明図、図５はスキュー
取り終了までの説明図、図６は頭出し完了までの説明
図、図７は給紙制御ブロック図である。The present invention has a feature in feeding control for preventing a roller mark caused by a paper feed roller from sticking to a sheet during skew removal and for reducing rubbing noise between a transport roller and a driven roller during skew removal. The embodiment will be described with reference to the drawings. FIG. 2 is an explanatory diagram of paper detection, FIG. 3 is an explanatory diagram of advance, FIG. 4 is an explanatory diagram of reverse rotation, FIG. 5 is an explanatory diagram until skew removal is completed, FIG. FIG. 3 is a block diagram of a sheet feeding control.
【００１８】先ず、図７により給紙制御について説明す
る。制御部１０は、記録装置の主制御部のプリンタドラ
イバから送られて来るプリント情報を受信し、このプリ
ント情報を判断し給紙シーケンスを実行する。プリント
情報は、普通紙、コート紙、ＯＨＰ用シート、光沢紙、
光沢フィルムなどの用紙の種類に関する情報（紙種情
報）、解像度に関する情報（解像度情報）などである。First, the paper feed control will be described with reference to FIG. The control unit 10 receives print information sent from the printer driver of the main control unit of the printing apparatus, determines the print information, and executes a paper feed sequence. Print information includes plain paper, coated paper, OHP sheets, glossy paper,
Information on the type of paper such as a glossy film (paper type information), information on resolution (resolution information), and the like.
【００１９】制御部１０は、給紙指令により選択された
シーケンスに基づいて給紙ローラ駆動部１１および搬送
ローラ駆動部１２を制御する。給紙ローラ駆動部１１
は、制御部１０からの駆動信号に基づいて給紙ローラ用
モータを通常の給送速度又は通常の給紙速度より速い速
度（高速）で駆動する。搬送ローラ駆動部１２は、制御
部１０からの駆動信号に基づいて搬送ローラ用モータを
駆動し、搬送ローラを正転又は逆転させ、用紙Ｐを記録
へッド６の方向へ給送し、又はそれとは逆方向に給送す
る。The control unit 10 controls the paper feed roller drive unit 11 and the transport roller drive unit 12 based on the sequence selected by the paper feed command. Paper feed roller drive unit 11
Drives the paper feed roller motor at a normal feeding speed or at a speed (higher speed) higher than the normal paper feeding speed based on a driving signal from the control unit 10. The transport roller drive unit 12 drives the transport roller motor based on a drive signal from the control unit 10, rotates the transport roller forward or backward, and feeds the paper P in the direction of the recording head 6, or Feed in the opposite direction.
【００２０】給紙動作を図２〜６，図８，図９を参照し
ながら説明する。図８は給紙制御のフロー図、図９はタ
イミングチャートである。図８において、給紙ローラ２
を正転させ、分離パッド３との協働作用でホッパ１の最
上位の用紙Ｐのみをピックアップし給送する（ステップ
１００）。用紙Ｐの前端が図２に示す用紙検知器ＰＥに
検知されると（ステップ１０１）、紙有り信号に基づい
て搬送ローラ４をｍ１ｓｔｅｐｓ正転させ、搬送ローラ
４に用紙Ｐを食い付かせて図３に示す前出しＬを行う
（ステップ１０２）。この間、給紙ローラ２を正転させ
（ステップ１０３）、位相検出器のｏｐｅｎ信号が判断
されると（ステップ１０４）、位相検出器のセンター位
置合わせ（リセット位置）の為、更にｎ１ ｓｔｅｐｓ
正転して待機させる（ステップ１０５）。The paper feeding operation will be described with reference to FIGS. FIG. 8 is a flowchart of paper feed control, and FIG. 9 is a timing chart. Referring to FIG.
Is rotated forward, and only the topmost sheet P of the hopper 1 is picked up and fed in cooperation with the separation pad 3 (step 100). When the front end of the paper P is detected by the paper detector PE shown in FIG. 2 (Step 101), the transport roller 4 is rotated forward by m1 steps based on the paper presence signal, and the transport roller 4 bites the paper P. The preceding L shown in 3 is performed (step 102). During this time, the paper feed roller 2 is rotated forward (step 103), and when the open signal of the phase detector is determined (step 104), the position of the center of the phase detector (reset position) is further increased by n1 steps.
The rotation is made normal to stand by (step 105).
【００２１】次に搬送ローラのみをｍ５ ｓｔｅｐｓ逆
転させる（ステップ１０６）。続いて、図４に示すよう
に給紙ローラ２をｎ２ ｓｔｅｐｓと搬送ローラ４をｍ
２ ｓｔｅｐｓ同時に逆転させる（ステップ１０７，１
０８）。図５に示すように給紙ローラ２の停止後、更に
搬送ローラ４を低速に切り替えてｍ３ ｓｔｅｐｓ逆転
させ、スキュー取りを行う（ステップ１０９）。スキュ
ー取り後、図６に示すように給紙ローラ２と搬送ローラ
４を同時に正転させる（ステップ１１０，１１１）。給
紙ローラ２は、位相検出器のｏｐｅｎ信号が判断される
と（ステップ１１２）、位相検出器のセンター位置合わ
せ（リセット位置）の為、更にｎ１ ｓｔｅｐｓ正転し
て待機させる（ステップ１１３）。一方、搬送ローラ４
はｍ４ ｓｔｅｐｓ正転させ、一定長Ｌｏの頭出しを行
って終了する。Next, only the transport roller is rotated in the reverse direction by m5 steps (step 106). Subsequently, as shown in FIG. 4, the feed roller 2 is set at n2 steps and the transport roller 4 is set at m.
2 steps are reversed simultaneously (steps 107 and 1
08). As shown in FIG. 5, after the paper feed roller 2 stops, the transport roller 4 is further switched to a low speed to reverse the m3 steps to perform skew removal (step 109). After removing the skew, the feed roller 2 and the transport roller 4 are simultaneously rotated forward as shown in FIG. 6 (steps 110 and 111). When the open signal of the phase detector is determined (step 112), the paper feed roller 2 further rotates forward by n1 steps and waits (step 113) to align the center of the phase detector (reset position). On the other hand, the transport roller 4
Makes m4 steps perform normal rotation, performs cueing of a fixed length Lo, and ends.
【００２２】このようにスキュー取りの前出しを給紙ロ
ーラ２と搬送ローラ４の同時正転させ、給紙ローラ２が
１回転してリセット位置になるまで行うことで、この動
作において給紙ローラ２と用紙Ｐの間でスリップを起こ
させなくし、ローラ痕の付くのを防止する。また、給紙
ローラ２を停止させ、搬送ローラの逆転による用紙Ｐの
吐き出し後において、搬送ローラ４の回転が低速に切り
替えられている為、用紙の先端と搬送ローラのニップ部
との間で擦り合いによって発生する音のレベルが低くな
り、騒音として感じ難くなる。In this manner, the skew removal is advanced until the paper feed roller 2 and the transport roller 4 are simultaneously rotated forward and the paper feed roller 2 makes one rotation to reach the reset position. A slip is not caused between the sheet 2 and the sheet P, and a roller mark is prevented from being formed. Further, after the paper feed roller 2 is stopped and the rotation of the transport roller 4 is switched to low speed after the discharge of the paper P due to the reverse rotation of the transport roller, rubbing occurs between the leading edge of the paper and the nip portion of the transport roller. The level of the sound generated by the fitting becomes low, and it becomes hard to feel as noise.
【００２３】[0023]
【発明の効果】本発明によれば、スキュー取り時の用紙
の吐き出しによって停止している給紙ローラと用紙との
間にスリップが生じるが、このスリップは用紙の移動に
よって起こる為、用紙上に付くスリップ痕も一箇所に集
中せず、分散され、目立ち難くなる。また、用紙の吐き
出し以降を低速にすることにより、用紙の先端と搬送ロ
ーラのニップ部との間で擦り合いによって発生する音の
レベルを低下させることができ、騒音が軽減され、使用
環境に適合させ易くなる。According to the present invention, a slip is generated between the paper feed roller and the paper stopped at the time of skew removal, and the slip occurs due to the movement of the paper. Slip marks that adhere are not concentrated in one place, but are dispersed and less noticeable. Also, by lowering the speed after ejection of the paper, the level of the sound generated by the rubbing between the leading edge of the paper and the nip portion of the transport roller can be reduced, reducing noise and adapting to the usage environment. It is easy to make it.
【図１】本発明に係る記録装置の要部を示す側面図であ
る。FIG. 1 is a side view showing a main part of a recording apparatus according to the present invention.
【図２】紙検知の説明図である。FIG. 2 is an explanatory diagram of paper detection.
【図３】紙検知後の用紙の前出しの説明図である。FIG. 3 is an explanatory diagram of advance of a sheet after sheet detection.
【図４】用紙の前出し後の逆転動作の説明図である。FIG. 4 is an explanatory diagram of a reverse rotation operation after advance of a sheet.
【図５】スキュー取り動作の説明図である。FIG. 5 is an explanatory diagram of a skew removing operation.
【図６】スキュー取り後の頭出し動作の説明図である。FIG. 6 is an explanatory diagram of a cueing operation after skew removal.
【図７】給紙制御ブロック図である。FIG. 7 is a block diagram of a sheet feeding control.
【図８】本発明の給紙方法のフローチャートを示す図で
ある。FIG. 8 is a diagram illustrating a flowchart of a sheet feeding method according to the present invention.
【図９】本発明の給紙方法のタイミングチャートを示す
図である。FIG. 9 is a diagram showing a timing chart of the paper feeding method of the present invention.
【図１０】食い付き吐出し方式による従来のスキュー取
り動作の説明図である。FIG. 10 is an explanatory diagram of a conventional skew removing operation by a biting discharge method.
【図１１】食い付き吐出し方式による従来のスキュー取
りの頭出し動作の説明図である。FIG. 11 is an explanatory diagram of a cueing operation of a conventional skew removal by a biting discharge method.
【図１２】食い付き吐出し方式による従来のスキュー取
りのローラ痕付着の説明図である。FIG. 12 is an explanatory diagram of a roller mark adhesion in a conventional skew removal by a biting discharge method.
１ ホッパ ２ 給紙ローラ ３ 分離パッド ４ 搬送ローラ ５ 従動ローラ ６ 記録ヘッド ７ 排出ローラ ８ 用紙ガイド Ｐ 用紙 ＰＥ 用紙検知器 ＡＳＦ 給紙装置 DESCRIPTION OF SYMBOLS 1 Hopper 2 Paper feed roller 3 Separation pad 4 Conveyance roller 5 Follower roller 6 Recording head 7 Discharge roller 8 Paper guide P Paper PE Paper detector ASF Paper feeder
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3F049 AA02 AA03 DA12 EA12 EA17 EA22 EA24 EA28 EA29 LA01 LB03 3F102 AA01 AB01 BA02 BA09 BB02 CA01 CB01 CB04 CB05 DA08 EA03 EC03 FA04 FA07 3F343 FA02 FB01 FC01 FC13 FC17 GA02 GB01 GC01 GD01 HA12 HA33 HB01 JA03 JD03 JD08 KA04 KA16 LA04 LA16 LC09 LC19 LC20 LC22 LC23 LD10 MA03 MA13 MA14 MA15 MA33 MB03 MB13 MB14 MB15 MC20 MC21 MC22 MC26 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F049 AA02 AA03 DA12 EA12 EA17 EA22 EA24 EA28 EA29 LA01 LB03 3F102 AA01 AB01 BA02 BA09 BB02 CA01 CB01 CB04 CB05 DA08 EA03 EC03 FA04 FA07 3F343 FA02 FB01 FC01 FC01 FC01 FC01 HA33 HB01 JA03 JD03 JD08 KA04 KA16 LA04 LA16 LC09 LC19 LC20 LC22 LC23 LD10 MA03 MA13 MA14 MA15 MA33 MB03 MB13 MB14 MB15 MC20 MC21 MC22 MC26
Claims (9)
用紙を搬送ローラにてスキュー取りをした後に給送する
給紙方法において、 スキュー取り時に搬送ローラおよび給紙ローラを正転さ
せ、給送される用紙を搬送ローラに食い付かせて前出し
動作を行い、該前出し動作中に給紙ローラをリセット位
置で停止させた後、搬送ローラのみを一定量逆転させ、
さらに搬送ローラと給紙ローラを逆転させて用紙の逆送
り動作を行い、該搬送ローラに用紙を食い付かせた状態
で給紙ローラを停止させ、更に搬送ローラを逆転させて
用紙の吐出し動作を行うことを特徴とする給紙方法。1. A sheet feeding method in which a sheet fed by a D-type sheet feeding roller is skewed by a conveying roller and then fed, wherein the conveying roller and the sheet feeding roller are rotated forward when the skew is removed. The feeding operation is performed by causing the fed paper to bite the transport roller, and the paper feed roller is stopped at the reset position during the advance operation.
In addition, the transport roller and the paper feed roller are rotated in reverse to perform a reverse feed operation of the paper, the paper feed roller is stopped in a state where the paper is bitten by the transport roller, and the transport roller is further rotated in reverse to discharge the paper. A sheet feeding method.
搬送ローラの間で給送される用紙の先端を検知し、該紙
検知から設定されたステップ数の前記搬送ローラの回転
により行われることを特徴とする請求項１記載の給紙方
法。2. The sheet feeding operation according to claim 1, wherein a leading edge of the sheet fed between a sheet feeding roller and a conveying roller is detected, and the sheet feeding roller is rotated by a predetermined number of steps from the sheet detection. 2. The sheet feeding method according to claim 1, wherein the sheet is fed.
リセット動作の終了より後に終了することを特徴とする
請求項１記載の給紙方法。3. The paper feeding method according to claim 1, wherein the advance operation of the paper is ended after the end of the reset operation of the paper feed roller.
給紙ローラの逆転を同時に行うことを特徴とする請求項
１〜３のいずれかに記載の給紙方法。4. The paper feeding method according to claim 1, wherein in the reverse feeding operation of the paper, the transport roller and the paper feeding roller are simultaneously rotated in reverse.
逆転開始から所定タイミング遅らせて給紙ローラを逆転
させることを特徴とする請求項１〜３のいずれかに記載
の給紙方法。5. The paper feeding method according to claim 1, wherein in the reverse feeding operation of the paper, the paper feeding roller is rotated reversely by a predetermined timing from the start of the reverse rotation of the transport roller.
回転を通常の速度より低速に切り替えて行うことを特徴
とする請求項１〜５のいずれかに記載の給紙方法。6. The paper feeding method according to claim 1, wherein the discharging operation of the paper is performed by switching a rotation of a transport roller to a speed lower than a normal speed.
用紙を搬送ローラにてスキュー取りをした後に給送し記
録を行う記録装置の給紙方法において、 スキュー取り時に搬送ローラおよび給紙ローラを正転さ
せ、給送される用紙を搬送ローラに一定長食い付かせ、
給紙ローラを停止させた後、搬送ローラの回転を通常の
速度より低速に切り替えて逆転させ、用紙を逆送りして
吐出し動作を行うことを特徴とする給紙方法。7. A sheet feeding method for a recording apparatus, in which a sheet fed by a side-view D-type sheet feeding roller is skewed by a feeding roller and then fed and recorded, wherein the feeding roller and the feeding roller are fed when the skew is removed. Rotate the paper roller forward to make the fed paper bite the transport roller for a certain length,
A paper feeding method, comprising: stopping a paper feed roller, switching the rotation of a transport roller to a speed lower than a normal speed, reversing the paper, and feeding the paper in reverse to perform a discharge operation.
キュー取り動作モードを有し、該モードが選択可能であ
ることを特徴とする記録装置。8. A recording apparatus having a skew removal operation mode according to claim 1, wherein said mode is selectable.
って選択できることを特徴とする請求項７記載の記録装
置。9. The recording apparatus according to claim 7, wherein said skew removal operation mode can be selected according to a paper type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27674999A JP3741190B2 (en) | 1999-09-29 | 1999-09-29 | Paper feeding method and recording apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27674999A JP3741190B2 (en) | 1999-09-29 | 1999-09-29 | Paper feeding method and recording apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001097599A true JP2001097599A (en) | 2001-04-10 |
| JP3741190B2 JP3741190B2 (en) | 2006-02-01 |
Family
ID=17573817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27674999A Expired - Fee Related JP3741190B2 (en) | 1999-09-29 | 1999-09-29 | Paper feeding method and recording apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3741190B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003146453A (en) * | 2001-08-31 | 2003-05-21 | Seiko Epson Corp | Recording apparatus |
| JP2005154100A (en) * | 2003-11-27 | 2005-06-16 | Fuji Xerox Co Ltd | Sheet skew correction device |
| CN101850911A (en) * | 2009-03-30 | 2010-10-06 | 兄弟工业株式会社 | Sheet feeding and comprise the image recorder of sheet feeding |
| US8104762B2 (en) | 2006-06-15 | 2012-01-31 | Seiko Epson Corporation | Feeding device with feeding roller and transport rollers |
| JP2015054727A (en) * | 2013-09-10 | 2015-03-23 | セイコーエプソン株式会社 | Medium processor and medium conveying method |
| JP2016008124A (en) * | 2014-06-25 | 2016-01-18 | セイコーエプソン株式会社 | Feeding unit and recording device |
| JP2018144902A (en) * | 2017-03-01 | 2018-09-20 | キヤノン株式会社 | Conveying device, recording device, skew amount calculation method, and conveying method |
-
1999
- 1999-09-29 JP JP27674999A patent/JP3741190B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003146453A (en) * | 2001-08-31 | 2003-05-21 | Seiko Epson Corp | Recording apparatus |
| JP2005154100A (en) * | 2003-11-27 | 2005-06-16 | Fuji Xerox Co Ltd | Sheet skew correction device |
| US8104762B2 (en) | 2006-06-15 | 2012-01-31 | Seiko Epson Corporation | Feeding device with feeding roller and transport rollers |
| CN101850911A (en) * | 2009-03-30 | 2010-10-06 | 兄弟工业株式会社 | Sheet feeding and comprise the image recorder of sheet feeding |
| JP2015054727A (en) * | 2013-09-10 | 2015-03-23 | セイコーエプソン株式会社 | Medium processor and medium conveying method |
| JP2016008124A (en) * | 2014-06-25 | 2016-01-18 | セイコーエプソン株式会社 | Feeding unit and recording device |
| CN105269986A (en) * | 2014-06-25 | 2016-01-27 | 精工爱普生株式会社 | Feed device and recording apparatus |
| JP2018144902A (en) * | 2017-03-01 | 2018-09-20 | キヤノン株式会社 | Conveying device, recording device, skew amount calculation method, and conveying method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3741190B2 (en) | 2006-02-01 |
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