JPH0322195Y2 - - Google Patents

Info

Publication number
JPH0322195Y2
JPH0322195Y2 JP1984168266U JP16826684U JPH0322195Y2 JP H0322195 Y2 JPH0322195 Y2 JP H0322195Y2 JP 1984168266 U JP1984168266 U JP 1984168266U JP 16826684 U JP16826684 U JP 16826684U JP H0322195 Y2 JPH0322195 Y2 JP H0322195Y2
Authority
JP
Japan
Prior art keywords
paper
roller
recording paper
gate
friction
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
Application number
JP1984168266U
Other languages
Japanese (ja)
Other versions
JPS6183641U (en
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 filed Critical
Priority to JP1984168266U priority Critical patent/JPH0322195Y2/ja
Publication of JPS6183641U publication Critical patent/JPS6183641U/ja
Application granted granted Critical
Publication of JPH0322195Y2 publication Critical patent/JPH0322195Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Handling Of Cut Paper (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Registering Or Overturning Sheets (AREA)

Description

【考案の詳細な説明】 〈技術分野〉 本考案は2つのロールの間に記録紙を挟持し
て、ロールの回転によつて記録紙を送る紙送り装
置に関する。
[Detailed Description of the Invention] <Technical Field> The present invention relates to a paper feeding device that sandwiches recording paper between two rolls and feeds the recording paper by rotation of the rolls.

〈従来技術〉 従来、第3図のような、接触して平行に配され
た2つのゲートローラと紙ガイド板で構成される
紙入口機構では上ゲートローラ12、下ゲートロ
ーラ11の2つがいずれも摩擦係数の高いゴム系
で作られている場合と、一方がゴム系、他方がス
チール等の組み合わせで作られている場合とがあ
つた。いずれの場合も紙の先端が2つのゲートロ
ーラの接点に達する前に摩擦係数の高いゴム系の
ローラに接触する場合があつた。するとそこで紙
の進行が妨げられ、2つのゲートローラの接点に
到達することができない。つまり、紙の先端の初
期位置にバラツキが発生し、高い印字位置精度を
得ることができなかつた。
<Prior Art> Conventionally, in a paper entry mechanism consisting of two gate rollers and a paper guide plate arranged parallel to each other in contact with each other as shown in FIG. 3, the upper gate roller 12 and the lower gate roller 11 are There were also cases where one side was made of a rubber-based material with a high coefficient of friction, and there were cases where one side was made of a rubber-based material and the other material was made of a combination of materials such as steel. In either case, there were cases in which the leading edge of the paper came into contact with a rubber-based roller having a high coefficient of friction before reaching the contact point between the two gate rollers. The advance of the paper is then obstructed there, and the paper cannot reach the contact point between the two gate rollers. In other words, variations occurred in the initial position of the leading edge of the paper, making it impossible to obtain high printing position accuracy.

〈目 的〉 本考案の目的は、紙の先端が途中でひつかかる
ことなく常に2つのゲートローラの接点に達し、
紙の先端の初期位置のバラツキをなくし、高い印
字位置精度を得ることである。
<Purpose> The purpose of this invention is to ensure that the leading edge of the paper always reaches the contact point of the two gate rollers without getting caught on the way.
The purpose is to eliminate variations in the initial position of the leading edge of paper and obtain high printing position accuracy.

〈実施例〉 本考案は摩擦係数の大きいゲートローラと摩擦
係数の小さいゲートローラ、それと上下の紙ガイ
ド板により構成される。実施例を第1図,第2図
を用いて説明する。下ゲートローラ1は摩擦係数
の大きい材質で作られており図示しない駆動源と
連結されている。他方上ゲートローラ2は摩擦係
数の小さい材質で作られている。まず、ピツクア
ツプローラー7が回転して紙カセツト6から紙が
1枚取り出され、ゲートローラに送り込まれる。
この時、上紙ガイド板3と下紙ガイド板4が紙5
の先端5aを上ゲートローラ2の表面へ導く。
<Embodiment> The present invention is composed of a gate roller with a large coefficient of friction, a gate roller with a small coefficient of friction, and upper and lower paper guide plates. An embodiment will be explained using FIGS. 1 and 2. The lower gate roller 1 is made of a material with a high coefficient of friction, and is connected to a drive source (not shown). On the other hand, the upper gate roller 2 is made of a material with a small coefficient of friction. First, the pick-up roller 7 rotates to take out a sheet of paper from the paper cassette 6 and send it to the gate roller.
At this time, the upper paper guide plate 3 and the lower paper guide plate 4 are
5a to the surface of the upper gate roller 2.

上ゲートローラ2には全幅にわたり複数個所に
溝8が得られていて、くし歯状になつた上ガイド
板3の先端がこの溝の中まで入つており、上ガイ
ド板3と上ゲートローラ2とのすきまを実質ゼロ
にしている。つまり紙5の先端5aを上ゲートロ
ーラ2の表面上に最後までガイドしている。下ガ
イド板4の先端はできる限り2つのゲートローラ
の接点に近づけている。又、紙カセツト6から入
つてくる紙との角度を小さくするために、途中で
曲げて紙が入つてくる点と出ていく点をスムーズ
に結んでいる。曲線で結ぶことも考えられる。下
ガイド板4の先端と上ガイド板3とのギヤツプは
紙1枚通るために十分な範囲でできる限り小さく
することで上ゲートローラ2の表面から紙がはな
れないように紙の自由度を規制する。ピツクアツ
プローラー7でさらに紙を送ると、紙の先端は上
ゲートローラ2の表面上を滑り、第2図に示すよ
うに2つのゲートローラの接点に達する。上ゲー
トローラ2の摩擦係数が小さいため、紙の先端
5aは途中でひつかかることなく、常に2つのゲ
ートローラの接点に達する。つまり、紙の先端の
初期位置を一定にすることができる。そしてこの
接点に来て初めて紙の先端5aは下ゲートローラ
1に接する。以上の動作により、紙の先端の位置
精度は従来±1mm程度のものが±0.5mmへ、紙の
傾きは従来±0.5°程度のものが±0.1°へと低減さ
れた。紙カセツトを使わないでカツトシートを手
差しの場合でも、第1図,第2図に示されている
ピツクアツプローラー7の送りを手の送りにかえ
ることで同様の効果を得ることができる。
The upper gate roller 2 is provided with grooves 8 at multiple locations over its entire width, and the tip of the comb-like upper guide plate 3 is inserted into these grooves, so that the upper guide plate 3 and the upper gate roller 2 The gap between the two is virtually zero. In other words, the leading end 5a of the paper 5 is guided onto the surface of the upper gate roller 2 until the end. The tip of the lower guide plate 4 is placed as close as possible to the contact points of the two gate rollers. Also, in order to reduce the angle with the paper coming in from the paper cassette 6, it is bent in the middle to smoothly connect the point where the paper comes in and the point where the paper comes out. It is also possible to connect them with a curved line. The gap between the tip of the lower guide plate 4 and the upper guide plate 3 is made as small as possible within a range sufficient for one sheet of paper to pass through, thereby regulating the degree of freedom of the paper so that the paper does not come off the surface of the upper gate roller 2. do. When the paper is further fed by the pick-up roller 7, the leading edge of the paper slides on the surface of the upper gate roller 2 and reaches the contact point between the two gate rollers as shown in FIG. Because the friction coefficient of the upper gate roller 2 is small, the leading edge of the paper
5a always reaches the contact point of the two gate rollers without getting hit on the way. In other words, the initial position of the leading edge of the paper can be kept constant. Then, the leading edge 5a of the paper comes into contact with the lower gate roller 1 for the first time at this contact point. Through the above operations, the positional accuracy of the leading edge of the paper has been reduced from about ±1 mm to ±0.5 mm, and the inclination of the paper has been reduced from about ±0.5° to ±0.1°. Even when manually feeding cut sheets without using a paper cassette, the same effect can be obtained by changing the feeding of the pick-up roller 7 shown in FIGS. 1 and 2 to manual feeding.

〈効 果〉 以上のように本考案によれば、ピツクアツプロ
ーラによつて給紙された記録紙は、摩擦係数の小
さいゲートローラ側に延長された下紙ガイド部材
によつて強制的に摩擦係数の小さいゲートローラ
の表面に沿わせることができる。
<Effects> As described above, according to the present invention, the recording paper fed by the pick-up roller is forcibly reduced to a friction coefficient by the lower paper guide member extending toward the gate roller side, which has a smaller friction coefficient. can be placed along the surface of a small gate roller.

従つて、記録紙は摩擦係数の小さいゲートロー
ラの表面を滑るようにして一対のゲートローラの
接触線と平行となるような形で到達するので、記
録紙先端部から始まる印字は紙面に対して斜めに
なつたり、ずれることなく正確に行われる。
Therefore, the recording paper slides on the surface of the gate roller, which has a small coefficient of friction, and reaches the surface parallel to the contact line between the pair of gate rollers, so that printing starting from the leading edge of the recording paper is oriented with respect to the paper surface. It is done accurately without being slanted or out of place.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案の一実施例を示す断面図、第2
図はその動作状態を示す断面図、第3図は従来例
を示す図である。 1,11……下ゲートローラ、2,12……上
ゲートローラ、3,13……上紙ガイド板、4,
14……下紙ガイド板、5,15……紙、6,1
6……紙カセツト、7,17……ピツクアツプロ
ーラ。
Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a sectional view showing its operating state, and FIG. 3 is a diagram showing a conventional example. 1, 11... lower gate roller, 2, 12... upper gate roller, 3, 13... upper paper guide plate, 4,
14... Lower paper guide plate, 5, 15... Paper, 6, 1
6...Paper cassette, 7,17...Pick-up roller.

Claims (1)

【実用新案登録請求の範囲】 紙カセツトに堆積された記録紙を一枚ずつピツ
クアツプローラによつて給紙される紙送り装置に
おいて、 一方は摩擦係数の大きい材質で、他方は、摩擦
係数の小さい材質で形成されるとともに、前記ピ
ツクアツプローラー7より給紙された前記記録紙
5の先端を接触線に突き当てた後、前記記録紙の
搬送を行う一対のゲートローラ1,2と、前記紙
カセツト6と前記ゲートローラ1,2との間に設
けられ、前記ピツクアツプローラ7によつて給紙
された前記記録紙5を前記ゲートローラ1,2の
前記接触線まで案内する紙ガイド手段3,4とを
備え、 前記紙ガイド手段は、前記記録紙5の表面をガ
イドする上紙ガイド部材3と、前記記録紙5の裏
面をガイドする下紙ガイド部材4とを有し、前記
記録紙5を前記接触線に突き当てるまでは、前記
記録紙5を前記摩擦係数の小さいゲートローラ2
の表面に沿わせるように前記下紙ガイド部材4の
先端部分を前記摩擦係数の小さいゲートローラ2
側へ近接して延長させたことを特徴とする紙送り
装置。
[Claim for Utility Model Registration] In a paper feeding device that feeds the recording paper stacked in a paper cassette one by one by a pick-up roller, one is made of a material with a large friction coefficient and the other is made of a material with a small friction coefficient. a pair of gate rollers 1 and 2, which are made of a material and transport the recording paper after the leading edge of the recording paper 5 fed by the pick-up roller 7 hits the contact line; and the paper cassette. 6 and the gate rollers 1, 2, and guide the recording paper 5 fed by the pick-up roller 7 to the contact line of the gate rollers 1, 2. The paper guide means includes an upper paper guide member 3 that guides the front surface of the recording paper 5, and a lower paper guide member 4 that guides the back surface of the recording paper 5, Until it hits the contact line, the recording paper 5 is moved by the gate roller 2 having a small coefficient of friction.
The tip of the lower paper guide member 4 is moved along the surface of the gate roller 2 having a small coefficient of friction.
A paper feeding device characterized by extending close to the side.
JP1984168266U 1984-11-06 1984-11-06 Expired JPH0322195Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1984168266U JPH0322195Y2 (en) 1984-11-06 1984-11-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984168266U JPH0322195Y2 (en) 1984-11-06 1984-11-06

Publications (2)

Publication Number Publication Date
JPS6183641U JPS6183641U (en) 1986-06-02
JPH0322195Y2 true JPH0322195Y2 (en) 1991-05-15

Family

ID=30726045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984168266U Expired JPH0322195Y2 (en) 1984-11-06 1984-11-06

Country Status (1)

Country Link
JP (1) JPH0322195Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002302284A (en) * 2001-04-09 2002-10-18 Nec Eng Ltd Feeder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7192925B2 (en) * 2020-02-03 2022-12-20 セイコーエプソン株式会社 printer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498250A (en) * 1972-05-10 1974-01-24
JPS5772538A (en) * 1980-10-20 1982-05-06 Fuji Xerox Co Ltd Paper feeder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498250A (en) * 1972-05-10 1974-01-24
JPS5772538A (en) * 1980-10-20 1982-05-06 Fuji Xerox Co Ltd Paper feeder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002302284A (en) * 2001-04-09 2002-10-18 Nec Eng Ltd Feeder
JP4516701B2 (en) * 2001-04-09 2010-08-04 Necエンジニアリング株式会社 Paper feeder

Also Published As

Publication number Publication date
JPS6183641U (en) 1986-06-02

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