JP3371946B2 - Paper feeder - Google Patents
Paper feederInfo
- Publication number
- JP3371946B2 JP3371946B2 JP10814797A JP10814797A JP3371946B2 JP 3371946 B2 JP3371946 B2 JP 3371946B2 JP 10814797 A JP10814797 A JP 10814797A JP 10814797 A JP10814797 A JP 10814797A JP 3371946 B2 JP3371946 B2 JP 3371946B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- sheet
- roller
- feed roller
- paper feed
- 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 - Fee Related
Links
Landscapes
- Handling Of Cut Paper (AREA)
- Manual Feeding Of Sheets (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明はプリンタ等に用いる
給紙装置に関する。
【０００２】
【従来の技術】用紙の先端一側を給紙ローラの摩擦によ
って引出し、これを紙送りローラと従動ローラのニップ
部に衝き当ててスキュー採りしながら紙送りする形式の
給紙装置では、ニップ部に衝き当って撓んだ用紙が腰折
れしないように紙送りローラの直前部分で用紙の撓みを
規制するための部材を設けるようにしているが、このよ
うな構成では、撓み規制部材が邪魔となって用紙のスタ
ック部上方を手差し経路として利用することができない
といった不都合が生じる。
【０００３】
【発明が解決しようとする課題】本発明はこのような問
題に鑑みてなされたもので、その目的とするところは、
スキュー取りの際の用紙の腰折れを防ぐ機能を損なうこ
となく、手差し紙の経路を確保することのできる新たな
給紙装置を提供することにある。
【０００４】
【課題を解決するための手段】すなわち、本発明はこの
ような課題を達成するための給紙装置として、給紙ロー
ラの回転と連動して動作する操作手段を設けて、紙送り
ローラの紙搬送方向上手側で用紙の撓みを規制する規制
部材を、この操作手段により給紙ローラの非給紙動作時
に手差し経路外へ退避させるようにしたものである。
【０００５】
【発明の実施の形態】そこで以下に本発明の実施例につ
いて説明する。図面はいずれも本発明の一実施例を示し
たものである。
【０００６】図において符号１はスキュー取りの際用紙
に生じる座屈を抑えるための規制部材で、この規制部材
１は略扇形状に形成された上、紙送りローラ１０の軸に
揺動自在に枢支され、かつ、図１に示したように、紙送
りローラ１０よりもはるかに小さな曲率をなすその周面
２を紙送りローラ１０の周面よりも用紙の送り込み側に
突出させるようにして、紙送りローラ１０と従動ローラ
１１とのニップ部Ａに送り込まれてきた用紙がここで必
要以上に撓むのを抑えるように構成されている。
【０００７】この規制部材１は、紙送りローラ１０の紙
搬送方向上手側に配設されたＤ字型の給紙ローラ１２と
連動して、給紙ローラ１２が給紙のための回転を始めた
ときは、図１に示したように、紙搬送方向下手側の規制
位置に回動し、また、給紙ローラ１２がその平らな面１
２ａを用紙の面に平行になるようにして停止した待機の
状態では、図２に示したように、紙搬送方向上手側に回
動して非規制位置を採るように動作する。
【０００８】ところで、図中符号４は規制部材１に上記
した動作を行わせるベルクランク形のレバーで、このレ
バー４は、規制部材１を常時非規制位置に変位させるよ
うバネ５によって図中左旋性が付与された状態で可回動
的に枢支された上、その一方の腕６を規制部材１の一部
に設けたピン３に係合させ、他方のＶ字形の腕７には、
給紙ローラ１２と同じ周期で回転する駆動ローラ８のカ
ム片９を摺接させて、規制部材１に規制位置と非規制位
置との間を往復動させるように構成されている。
【０００９】なお、図中符号１３は用紙トレイ、１４は
ホッパ、１５は用紙トレイ１３の先端に設けた分離パッ
ド、１６は用紙トレイ１３の上に配設した手差しガイ
ド、１７は紙端検出センサをそれぞれ示している。
【００１０】つぎに、このように構成された装置の給紙
動作について説明すると、いま、給紙信号により給紙ロ
ーラ１２が図中反時計方向に回転して用紙トレイ１３内
の用紙を引出すと、これに連動して駆動ローラ８が図中
矢印方向に回転し、そのカム９によりベルクランクレバ
ー４をバネ５に抗して図中時計方向に回動させ、係止し
たピン３を介して制御部材を紙搬送方向下手側、つまり
規制位置へ回動変位させる。
【００１１】これにより、給紙ローラ１２によって紙送
りローラ１０のニップ部Ａに送り込まれた用紙は、紙送
りローラ１０の周面よりも下方に延出した制御部材１の
周面２により過度の撓みを生じることなくスキュー取り
され、ついで紙送りローラ１０の回転とともに図示しな
い記録書込み部のもとへ送り出される。
【００１２】この状態では、規制部材１の先端１ａは手
差しガイド１６の延長線上に位置するため、手差し紙を
送り込むことはできないが、引続く給紙ローラ１２の回
転により、その平らな面１２ａが、図２（ａ）に示した
ように、用紙の面と平行になるところまで回転してくる
と、駆動ローラ８もさらに図中矢印方向に回転してその
カム９によりベルクランクレバー４を反時計方向に回動
させて、規制部材１を紙搬送方向上手側に突出させた非
規制位置に変位させる。
【００１３】このため、規制部材１の先端１ａは、図２
（ａ）に示したように、手差しガイド１６の延長線から
上方に退避して、手差し紙ガイド１６を案内とした手差
し紙の送り込みを可能にする。
【００１４】
【発明の効果】以上述べたように本発明によれば、スキ
ュー取りの際の用紙の撓みを規制する部材を、給紙ロー
ラと連動して動作する操作手段によって非給紙時に手差
し経路から退避させるようにしたので、通常の円滑な用
紙送りを確保しつつ、この用紙送り経路を利用した手差
し紙の送りにも支障を及ぼさないようにして装置の小形
化を実現させるばかりでなく、手差しのための専用部品
やその操作をも不要にすることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder used for a printer or the like. 2. Description of the Related Art In a paper feeder of a type in which one end of a paper is pulled out by friction of a paper feed roller and the paper is fed while being skewed by hitting the nip portion between a paper feed roller and a driven roller. In order to prevent the sheet bent against the nip portion from being bent, a member for restricting the sheet from being bent immediately before the paper feed roller is provided. A disadvantage arises in that the upper part of the stack of sheets cannot be used as a manual feed path as an obstacle. [0003] The present invention has been made in view of such a problem.
It is an object of the present invention to provide a new sheet feeding device capable of securing a path for a manual feed sheet without impairing a function of preventing a sheet from breaking at the time of skew removal. That is, according to the present invention, as a paper feeder for achieving such a problem, an operation means which operates in conjunction with rotation of a paper feed roller is provided, and a paper feeder is provided. A regulating member for regulating the bending of the sheet on the upper side in the sheet conveying direction of the roller is retracted to the outside of the manual feed path by the operating means when the sheet feeding roller does not feed the sheet. [0005] Embodiments of the present invention will be described below. The drawings all show one embodiment of the present invention. In the drawing, reference numeral 1 denotes a regulating member for suppressing buckling generated on a sheet during skew removal. The regulating member 1 is formed in a substantially fan shape, and is swingable about a shaft of a paper feed roller 10. As shown in FIG. 1, the peripheral surface 2 which is pivotally supported and has a curvature much smaller than that of the paper feed roller 10 is made to project more toward the paper feeding side than the peripheral surface of the paper feed roller 10. The paper fed into the nip portion A between the paper feed roller 10 and the driven roller 11 is configured to be restrained from bending more than necessary here. The regulating member 1 starts rotating for paper feeding in cooperation with a D-shaped paper feeding roller 12 disposed on the upper side of the paper feeding roller 10 in the paper conveying direction. As shown in FIG. 1, when the paper feed roller 12 is rotated to the regulating position on the lower side in the paper transport direction,
In a stand-by state in which the sheet 2a is stopped so as to be parallel to the surface of the sheet, as shown in FIG. Reference numeral 4 in the figure denotes a bell-crank lever which causes the regulating member 1 to perform the above-described operation. The lever 4 is rotated leftward in the figure by a spring 5 so that the regulating member 1 is constantly displaced to the unregulated position. The arm 6 is rotatably supported in a state where the property is given, and one arm 6 is engaged with a pin 3 provided on a part of the regulating member 1, and the other V-shaped arm 7 is
The cam piece 9 of the drive roller 8 rotating at the same cycle as the paper feed roller 12 is slidably contacted with the regulating member 1 to reciprocate between a regulated position and a non-regulated position. In the drawings, reference numeral 13 denotes a paper tray, 14 denotes a hopper, 15 denotes a separation pad provided at the end of the paper tray 13, 16 denotes a manual feed guide disposed on the paper tray 13, and 17 denotes a paper edge detection sensor. Are respectively shown. Next, the paper feeding operation of the apparatus configured as described above will be described. Now, when the paper feed roller 12 is rotated counterclockwise in the drawing by a paper feed signal and the paper in the paper tray 13 is pulled out. In conjunction with this, the driving roller 8 rotates in the direction of the arrow in the drawing, and the cam 9 rotates the bell crank lever 4 in the clockwise direction in the drawing against the spring 5, via the pin 3 locked. The control member is rotationally displaced to the lower side in the paper transport direction, that is, to the regulation position. As a result, the paper fed to the nip portion A of the paper feed roller 10 by the paper feed roller 12 is excessively moved by the peripheral surface 2 of the control member 1 extending below the peripheral surface of the paper feed roller 10. The skew is removed without bending, and is then sent out to a recording / writing unit (not shown) with the rotation of the paper feed roller 10. In this state, since the leading end 1a of the regulating member 1 is located on the extension of the manual feed guide 16, the manual feed paper cannot be fed in. However, the flat surface 12a is caused by the subsequent rotation of the paper feed roller 12. As shown in FIG. 2 (a), when the drive roller 8 rotates to a position parallel to the sheet surface, the drive roller 8 further rotates in the direction of the arrow in FIG. By rotating clockwise, the restricting member 1 is displaced to a non-restricted position protruding upward in the paper transport direction. For this reason, the tip 1a of the regulating member 1 is
As shown in (a), the manual sheet guide 16 is retracted upward from the extension of the manual sheet guide 16 to enable manual sheet feeding with the manual sheet guide 16 as a guide. As described above, according to the present invention, the member for restricting the bending of the sheet at the time of skew removal can be manually inserted at the time of non-sheet feeding by the operating means operating in conjunction with the sheet feeding roller. Since the paper is retracted from the path, it is possible not only to reduce the size of the device, but also to prevent the feeding of manual feed paper using this paper feed path while ensuring the normal smooth paper feed. It is also possible to eliminate the necessity of special parts and operation thereof.
【図面の簡単な説明】
【図１】（ａ）（ｂ）は通常の用紙送りの動作状態をも
って示した本発明の給紙装置とその要部機構についての
構成図である。
【図２】（ａ）（ｂ）は手差し給紙の動作状態をもって
示した同上装置及び機構についての構成図である。
【符号の説明】
１ 制御部材
４ 駆動ローラ
１０ 紙送りローラ
１２ 給紙ローラ
１３ 用紙トレイ
１６ 手差しガイドBRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 (a) and 1 (b) are configuration diagrams of a sheet feeding device of the present invention and a main part mechanism thereof shown in a normal sheet feeding operation state. FIGS. 2A and 2B are configuration diagrams of the above-described apparatus and mechanism showing an operation state of manual sheet feeding. [Description of Signs] 1 control member 4 drive roller 10 paper feed roller 12 paper feed roller 13 paper tray 16 manual feed guide
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平８−277044（ＪＰ，Ａ) 特開 平８−208045（ＪＰ，Ａ) 特開 平７−215490（ＪＰ，Ａ) 特開 平５−319633（ＪＰ，Ａ) 特開 昭60−102348（ＪＰ，Ａ) 実開 平１−68330（ＪＰ，Ｕ) 実開 昭61−193951（ＪＰ，Ｕ) 実開 昭60−195844（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65H 3/66 B41J 13/00 B65H 3/44 B65H 11/00 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-277044 (JP, A) JP-A-8-208045 (JP, A) JP-A-7-215490 (JP, A) JP-A-5-205490 319633 (JP, A) JP-A-60-102348 (JP, A) Japanese Utility Model Laid-Open No. 1-68330 (JP, U) Japanese Utility Model Application No. Sho 61-193951 (JP, U) Japanese Utility Model Application No. Sho 60-195844 (JP, U) (58) Field surveyed (Int.Cl. 7 , DB name) B65H 3/66 B41J 13/00 B65H 3/44 B65H 11/00
Claims (1)
た給紙装置において、 給紙ローラの回転と連動して動作する操作手段を設ける
とともに、紙送りローラの紙搬送方向上手側で用紙の撓
みを規制する規制部材を、上記操作手段により上記給紙
ローラの非給紙動作時に上記手差し経路外へ退避させる
ようにしたことを特徴とする給紙装置。(57) [Claim 1] In a paper feeder in which an upper part of a paper tray is used as a manual paper path, an operation means which operates in conjunction with rotation of a paper feed roller is provided, and a paper feed roller is provided. A sheet feeding device, wherein the regulating member for regulating the bending of the sheet on the upper side in the sheet conveying direction is retracted outside the manual feed path by the operation means when the sheet feeding roller is not fed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10814797A JP3371946B2 (en) | 1997-04-09 | 1997-04-09 | Paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10814797A JP3371946B2 (en) | 1997-04-09 | 1997-04-09 | Paper feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10279111A JPH10279111A (en) | 1998-10-20 |
| JP3371946B2 true JP3371946B2 (en) | 2003-01-27 |
Family
ID=14477142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10814797A Expired - Fee Related JP3371946B2 (en) | 1997-04-09 | 1997-04-09 | Paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3371946B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6244703B2 (en) * | 2013-07-10 | 2017-12-13 | セイコーエプソン株式会社 | Recording device |
-
1997
- 1997-04-09 JP JP10814797A patent/JP3371946B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10279111A (en) | 1998-10-20 |
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