JPH0798599B2 - Media feeding mechanism - Google Patents
Media feeding mechanismInfo
- Publication number
- JPH0798599B2 JPH0798599B2 JP62146908A JP14690887A JPH0798599B2 JP H0798599 B2 JPH0798599 B2 JP H0798599B2 JP 62146908 A JP62146908 A JP 62146908A JP 14690887 A JP14690887 A JP 14690887A JP H0798599 B2 JPH0798599 B2 JP H0798599B2
- Authority
- JP
- Japan
- Prior art keywords
- medium
- feeding
- roller
- roll
- passage
- 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 Continuous Sheets Of Paper (AREA)
- Advancing Webs (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Description
【発明の詳細な説明】 〔概要〕 本発明は、ロール状媒体の下部を支持する第１の送りロ
ーラによりロール状媒体を回転して、媒体通路に媒体を
繰り出し、第２の送りローラによって引き続き移送し、
第１の送りローラの媒体送り速度より第２の送りローラ
の媒体送り速度を大きくし、且つ媒体通路の幅を狭くし
て、媒体のたるみによりロール状媒体と第１の送りロー
ラとがスリップするように構成した。DETAILED DESCRIPTION OF THE INVENTION [Outline] In the present invention, a roll-shaped medium is rotated by a first feed roller that supports a lower portion of the roll-shaped medium to feed the medium to a medium passage, and a second feed roller continues. Transport,
The roll-shaped medium and the first feed roller slip due to the slack of the medium by making the medium feed speed of the second feed roller higher than the medium feed speed of the first feed roller and narrowing the width of the medium passage. As configured.
本発明は、ロール状媒体を回転させて媒体を繰り出す媒
体送り機構に関する。The present invention relates to a medium feeding mechanism that rotates a roll-shaped medium and feeds the medium.
第４図は従来の媒体送り機構を備えたプリンタの要部構
造説明図であり、１は印字ヘッド、２は固定プラテン、
2aは支持部材、３は媒体送り機構、４は第１の送りロー
ラ、５は第２の送りローラ、６は媒体通路、７はピンチ
ローラ、８はバッファプレートである。FIG. 4 is an explanatory view of a main part structure of a printer having a conventional medium feeding mechanism, in which 1 is a print head, 2 is a fixed platen,
Reference numeral 2a is a support member, 3 is a medium feeding mechanism, 4 is a first feeding roller, 5 is a second feeding roller, 6 is a medium passage, 7 is a pinch roller, and 8 is a buffer plate.
媒体送り機構３は、回転可能に保持したロール状媒体
（ロール紙）の下部を支持する第１の送りローラ４と、
媒体（用紙）を移送する第２の送りローラ５と、媒体通
路６とを備えた構成を有し、ロール状媒体は、第１の送
りローラ４の回転によって巻き戻されるように回転さ
れ、巻き戻された媒体は、媒体通路６を介して第２の送
りローラ５とピンチローラ７との間を通り、第２のロー
ラ５の回転によって引き続き移送され、印字ヘッド１と
プラテン２との間を通り、図示を省略したインクリボン
が印字ヘッド１と媒体との間に配置されて、印字ヘッド
１によって媒体に印字される。この印字に於ける改行，
排出の動作は、第1,第２の送りローラ4,5を駆動するこ
とにより行われる。The medium feeding mechanism 3 includes a first feeding roller 4 that supports a lower portion of a roll-shaped medium (roll paper) that is rotatably held,
The roll-shaped medium is rotated by the rotation of the first feed roller 4 so as to be rewound by the rotation of the first feed roller 4, and has a configuration including a second feed roller 5 for transporting a medium (paper) and a medium passage 6. The returned medium passes between the second feed roller 5 and the pinch roller 7 via the medium passage 6 and is further transported by the rotation of the second roller 5, and between the print head 1 and the platen 2. As described above, the ink ribbon (not shown) is arranged between the print head 1 and the medium, and the print head 1 prints on the medium. Newline in this print,
The discharging operation is performed by driving the first and second feed rollers 4 and 5.
従来の媒体送り機構３に於いては、第１の送りローラ４
の媒体送り速度が、第２の送りローラ５の媒体送り速度
より２％程度小さく設定されており、第２の送りローラ
５が主送りローラの役割を果たしている。又媒体通路６
の幅は比較的広く形成されており、この媒体通路６内に
媒体たるみが生じ易い問題がある。In the conventional medium feeding mechanism 3, the first feeding roller 4
The medium feeding speed is set to be about 2% smaller than the medium feeding speed of the second feeding roller 5, and the second feeding roller 5 serves as the main feeding roller. Moreover, the medium passage 6
Is relatively wide, and there is a problem that the medium is slack in the medium passage 6.
又第２の送りローラ５に対して、ロール状媒体の慣性に
よる矢印方向の負荷が発生する為に、第２の送りローラ
５による媒体送り量にばらつきが発生する。そこで、従
来は弾性材料のバッファプレート８を支持部材2aに片持
状に支持し、その先端をロール状媒体の外周に接触させ
て、媒体送り量のばらつきを低減する構成が採用されて
いる。Further, since a load in the arrow direction is generated on the second feed roller 5 due to the inertia of the roll-shaped medium, the medium feed amount by the second feed roller 5 varies. Therefore, conventionally, a structure has been adopted in which the buffer plate 8 made of an elastic material is supported by the support member 2a in a cantilever manner, and the tip end thereof is brought into contact with the outer circumference of the roll-shaped medium to reduce the variation in the medium feed amount.
しかし、バッファプレート８を必要とすることにより、
部品点数の増加によるコストアップの問題があり、又第
1,第２の送りローラ4,5間の媒体通路６内に媒体のたる
みが発生する問題がある。However, by requiring the buffer plate 8,
There is a problem of cost increase due to an increase in the number of parts.
There is a problem that the medium is slack in the medium passage 6 between the first and second feed rollers 4 and 5.
本発明は、簡単な構成により安定な媒体送りを可能と
し、且つコストダウンを図ることを目的とする。An object of the present invention is to enable stable medium feeding with a simple structure and to reduce the cost.
本発明の媒体送り機構は、第１図を参照して説明する
と、ロール状媒体100の下部を支持する第１の送りロー
ラ15の回転によりロール状媒体100を回転して媒体通路1
7に媒体を繰り出し、この媒体を第２の送りローラ16の
回転により引き続き移送する媒体送り機構に於いて、第
１の送りローラ15による媒体送り速度を、第２の送りロ
ーラ16による媒体送り速度より大きく設定すると共に、
媒体たるみにより、ロール状媒体100と第１の送りロー
ラ15とがスリップするように、媒体通路17の幅Ｗを狭く
形成したものである。なお、18は第２の送りローラ16と
対向するピンチローラである。Referring to FIG. 1, the medium feeding mechanism of the present invention rotates the roll-shaped medium 100 by the rotation of the first feeding roller 15 that supports the lower portion of the roll-shaped medium 100, and the medium passage 1
In the medium feeding mechanism for feeding the medium to 7 and continuously transporting the medium by the rotation of the second feeding roller 16, the medium feeding speed by the first feeding roller 15 is changed to the medium feeding speed by the second feeding roller 16. With a larger setting,
The width W of the medium passage 17 is formed to be narrow so that the roll-shaped medium 100 and the first feed roller 15 slip due to the medium slack. Reference numeral 18 is a pinch roller facing the second feed roller 16.
第１の送りローラ15の回転によりロール状媒体100は巻
き戻されるように回転され、媒体通路17内に繰り出され
る。この媒体通路17を通った媒体は第２の送りローラ16
の回転により引き続き図示を省略した印字部等へ移送さ
れる。この場合、第１の送りローラ15の媒体送り速度が
第２の送りローラ16の媒体送り速度より大きくなるよう
に設定されているから、第２の送りローラ16に対するロ
ール状媒体100の慣性負荷が影響しないものとなり、バ
ッファプレートを省略しても、媒体送り量のばらつきを
低減することができる。又第２の送りローラ16の媒体送
り速度より第１の送りローラ15の媒体送り速度が大きい
から、媒体が媒体通路17にたまってたるみが生じること
になるが、媒体通路17の幅Ｗを狭くしているから、たる
みが生じた媒体が媒体通路17の壁面に接触し、それによ
る接触抵抗が大きくなって、ロール状媒体100と第１の
送りローラ15との間にスリップが生じる。そして、この
スリップが生じている間に、第２の送りローラ16によっ
て媒体が移送される。従って、媒体通路17内に媒体が折
り畳まれるような状態が発生しないことになる。The roll-shaped medium 100 is rotated so as to be rewound by the rotation of the first feed roller 15 and is fed into the medium passage 17. The medium passing through the medium passage 17 is fed by the second feed roller 16
With the rotation of, the sheet is continuously transferred to a printing unit or the like (not shown). In this case, the medium feeding speed of the first feeding roller 15 is set to be higher than the medium feeding speed of the second feeding roller 16, so that the inertial load of the roll-shaped medium 100 on the second feeding roller 16 is increased. This has no effect, and even if the buffer plate is omitted, it is possible to reduce variations in the medium feed amount. Further, since the medium feeding speed of the first feeding roller 15 is higher than the medium feeding speed of the second feeding roller 16, the medium accumulates in the medium passage 17 to cause slack, but the width W of the medium passage 17 is narrowed. Therefore, the slackened medium comes into contact with the wall surface of the medium passage 17, and the contact resistance due to the contact increases, and a slip occurs between the roll medium 100 and the first feed roller 15. Then, while this slip is occurring, the medium is transported by the second feed roller 16. Therefore, the state in which the medium is folded does not occur in the medium passage 17.
第２図は本発明の実施例の媒体送り機構を示す側面図、
第３図は本発明の実施例の媒体送り機構の作用説明図で
あり、11は印字ヘッド、12は固定プラテン、13は媒体送
り機構、14は媒体ガイド、15は第１の送りローラ、16は
第２の送りローラ、17は媒体通路、18はピンチローラ、
100はロール状媒体である。FIG. 2 is a side view showing a medium feeding mechanism of an embodiment of the present invention,
FIG. 3 is a diagram for explaining the operation of the medium feeding mechanism of the embodiment of the present invention. 11 is a print head, 12 is a fixed platen, 13 is a medium feeding mechanism, 14 is a medium guide, 15 is a first feeding roller, 16 Is a second feed roller, 17 is a medium passage, 18 is a pinch roller,
100 is a roll medium.
印字ヘッド11とプラテン12とは、従来例の構成と同様で
あり、又媒体送り機構13は、第１の送りローラ15と、第
２の送りローラ16と、媒体通路17とにより構成されてい
る。The print head 11 and the platen 12 have the same structure as the conventional example, and the medium feeding mechanism 13 includes a first feeding roller 15, a second feeding roller 16, and a medium passage 17. .
第１の送りローラ15は、媒体供給部に回転可能に装着さ
れたロール状媒体100の下部を支持する位置に設けら
れ、図示を省略した駆動部によって、印字改行や排出等
の動作持に矢印方向に回転される。この第１の送りロー
ラ15の媒体送り速度は、第２の送りローラ16の媒体送り
速度より大きくなるように、それぞれの駆動部が設定さ
れている。The first feed roller 15 is provided at a position that supports the lower portion of the roll-shaped medium 100 rotatably mounted in the medium supply unit, and is driven by a drive unit (not shown) to control the operation such as line feed and discharge. Is rotated in the direction. Each drive unit is set so that the medium feeding speed of the first feeding roller 15 is higher than the medium feeding speed of the second feeding roller 16.
又第１の送りローラ15と第２の送りローラ16との間の媒
体通路17は、媒体が図３に概略を示すようにたるみ過ぎ
ても、壁面に接触するだけで、折り畳まれないように、
その幅Ｗが狭く形成されている。Also, the medium passage 17 between the first feeding roller 15 and the second feeding roller 16 is configured so that even if the medium is too slack as shown in FIG. ,
The width W is formed narrow.
印字ヘッド11とプラテン12との間に媒体をセットする
時、第１の送りローラ15と第２の送りローラ16とは矢印
方向に回転され、ロール状媒体100は第１の送りローラ1
5の回転によって巻き戻されるように回転され、繰り出
された媒体は媒体通路17を通って第２の送りローラ16と
ピンチローラ18との間に送られ、この第２の送りローラ
16の回転によって引き続き移送され、印字ヘッド11とプ
ラテン12との間を所定量通過した時に、図示を省略して
いる公知の手段、例えば、センサによって媒体先端位置
を検出し、それによって、第1,第２の送りローラ15,16
の回転は一旦停止され、媒体送り停止される。その後、
印字ヘッド11による印字の進行に伴って第1,第２の送り
ローラ15,16により媒体送りが行われる。When setting the medium between the print head 11 and the platen 12, the first feeding roller 15 and the second feeding roller 16 are rotated in the arrow direction, and the roll-shaped medium 100 is rotated by the first feeding roller 1.
The medium which is rotated and unwound by the rotation of 5 is sent between the second feed roller 16 and the pinch roller 18 through the medium passage 17, and the second feed roller 16
When the print head 11 and the platen 12 are continuously conveyed by the rotation of 16, and a predetermined amount is passed between the print head 11 and the platen 12, a known means (not shown), for example, a sensor detects the medium leading edge position, and thereby the first , Second feed rollers 15, 16
Is temporarily stopped, and the medium feeding is stopped. afterwards,
As the printing by the print head 11 progresses, the medium is fed by the first and second feed rollers 15 and 16.
又第２の送りローラ16による媒体送り速度より第１の送
りローラ15による媒体送り速度が大きいから、媒体通路
17に常に媒体が繰り出されており、第２の送りローラ16
からみてロール状媒体100は媒体送り時の負荷とならな
いことになる。従って、従来例のバッファプレートを省
略しても、媒体の送り量のばらつきを低減することがで
きる。Further, since the medium feeding speed by the first feeding roller 15 is higher than the medium feeding speed by the second feeding roller 16,
The medium is constantly fed to 17 and the second feed roller 16
From the viewpoint, the roll-shaped medium 100 does not become a load when feeding the medium. Therefore, even if the buffer plate of the conventional example is omitted, it is possible to reduce the variation in the feed amount of the medium.
又比較的長い時間の媒体送りを継続した時に、第1,第２
の送りローラ15,16の媒体送り速度の差によって媒体通
路17内に、例えば、第３図に示すように、媒体がたるみ
過ぎる状態となっても、幅Ｗが狭く形成されているか
ら、媒体は波状となり、媒体通路17の壁面に媒体が圧接
される状態となる。それによって、媒体の通過に対して
媒体通路17の摩擦抵抗が大きくなり、第１の送りローラ
15とロール状媒体100との間にスリップが生じる。When the medium feeding is continued for a relatively long time, the first, second
Even if the medium is too slack as shown in FIG. 3 in the medium passage 17 due to the difference in the medium feeding speed between the feeding rollers 15 and 16, the width W is formed narrow, Becomes wavy, and the medium is pressed against the wall surface of the medium passage 17. As a result, the friction resistance of the medium passage 17 with respect to the passage of the medium increases, and the first feed roller
A slip occurs between 15 and the roll-shaped medium 100.
このように、媒体通路17の幅Ｗを狭くしたことにより、
第１の送りローラ15の媒体送り速度が第２の送りローラ
16の媒体送り速度より大きく、媒体通路17内に媒体が送
り込まれても、媒体通路17の壁面に圧接される状態とな
ると、自動的に第１の送りローラ15とロール状媒体100
との間にスリップが生じて、それ以上の媒体の送り込み
が生じないので、媒体通路17内に媒体がつまるようなこ
とはなく、第１の送りローラ15とロール状媒体100との
間にスリップが生じている間に、第２の送りローラ16に
よる媒体の移送が継続され、媒体通路17内の媒体は印字
ヘッド11側へ移送される。それによって、壁面への媒体
の圧接状態は解消される。In this way, by narrowing the width W of the medium passage 17,
The medium feeding speed of the first feeding roller 15 is the second feeding roller.
Even if the medium is fed into the medium passage 17 at a speed higher than the medium feeding speed of 16, the first feed roller 15 and the roll-shaped medium 100 are automatically brought into contact with the wall surface of the medium passage 17 under pressure.
Since there is no slippage between the first feeding roller 15 and the roll-shaped medium 100, there is no slippage between the first feeding roller 15 and the roll-shaped medium 100. While the sheet is being generated, the medium is continuously conveyed by the second feed roller 16, and the medium in the medium passage 17 is conveyed to the print head 11 side. As a result, the pressed state of the medium against the wall surface is eliminated.
具体的には、媒体通路17の長さＬ＝80mm、第1,第２の送
りローラ15,16の直径D1,D2＝15mm、ロール状媒体100の
直径Ｄ＝60〜90mm、第１の送りローラ15の表面摩擦係数
μ＝0.8とした媒体送り機構に於いて、第１の送りロー
ラ15の媒体送り速度を、第２の送りローラ16の媒体送り
速度の２％増しとし、且つ媒体通路17の幅Ｗを3mmとし
た時、媒体送り量のばらつきを低減し、安定な媒体送り
が可能であることが確認された。Specifically, the length L of the medium passage 17 is 80 mm, the diameters D 1 and D 2 of the first and second feed rollers 15 and 16 are 15 mm, and the diameter D of the roll medium 100 is 60 to 90 mm. In the medium feeding mechanism in which the surface friction coefficient μ of the feeding roller 15 is 0.8, the medium feeding speed of the first feeding roller 15 is increased by 2% of the medium feeding speed of the second feeding roller 16, and It was confirmed that when the width W of the passage 17 was set to 3 mm, the variation of the medium feeding amount was reduced and the stable medium feeding was possible.
以上説明したように、本発明は、ロール状媒体100の下
部を支持する第１の送りローラ15と、第２の送りローラ
16と、媒体通路17とを含む構成を有するもので、 （１）．第１の送りローラ15の媒体送り速度を第２の送
りローラ16の媒体送り速度より大きくしたことにより、
従来例のバッファプレートを省略しても、ロール状媒体
100の慣性の影響を受けることなく、第２の送りローラ1
6により所望の媒体送り量で媒体を送ることが可能とな
る利点があり、バッファプレートの省略による部品点数
の削減でコストダウンを図ることができる利点がある。As described above, according to the present invention, the first feeding roller 15 that supports the lower portion of the roll-shaped medium 100 and the second feeding roller 15 are provided.
16 and a medium passage 17 (1). By making the medium feeding speed of the first feeding roller 15 higher than the medium feeding speed of the second feeding roller 16,
Roll-shaped media without the conventional buffer plate
Second feed roller 1 without being affected by 100 inertia
6 has an advantage that the medium can be fed at a desired medium feeding amount, and there is an advantage that the cost can be reduced by reducing the number of parts by omitting the buffer plate.
（２）．媒体通路17の幅Ｗは、媒体がたるみ過ぎても折
り畳まれないように狭く形成したことにより、媒体通路
17内に媒体が第１の送りローラ15によって送り込んだ時
に、媒体通路17の壁面に媒体が圧接され、第１の送りロ
ーラ15に対する負荷が大きくなり、第１の送りローラ15
とロール状媒体100との間にスリップが生じるから、そ
れ以上媒体が媒体通路17内に送り込まれることがなくな
り、又そのスリップが生じている間に、第２の送りロー
ラ16によって媒体通路17から媒体が移送されるから、媒
体送りの安定化を図ることができる利点がある。(2). The width W of the medium passage 17 is formed so as not to be folded even if the medium is too slack.
When the medium is fed into the inside 17 by the first feed roller 15, the medium is pressed against the wall surface of the medium passage 17 and the load on the first feed roller 15 is increased.
The slip between the roll-shaped medium 100 and the roll-shaped medium 100 prevents the medium from being fed into the medium passage 17, and the second feed roller 16 causes the medium to pass from the medium passage 17 during the slip. Since the medium is transferred, there is an advantage that the medium feeding can be stabilized.
第１図は本発明の原理図、第２図は本発明の実施例の媒
体送り機構を示す側面図、第３図は本発明の実施例の媒
体送り機構の作用説明図、第４図は従来の媒体送り機構
を備えたプリンタの要部構造説明図である。 11は印字ヘッド、12はプラテン、13は媒体送り機構、15
は第１の送りローラ、16は第２の送りローラ、17は媒体
通路、100はロール状媒体、FIG. 1 is a principle view of the present invention, FIG. 2 is a side view showing a medium feeding mechanism of an embodiment of the present invention, FIG. 3 is an operation explanatory diagram of the medium feeding mechanism of the embodiment of the present invention, and FIG. It is an explanatory view of a main part structure of a printer provided with a conventional medium feeding mechanism. 11 is a print head, 12 is a platen, 13 is a medium feeding mechanism, and 15
Is a first feed roller, 16 is a second feed roller, 17 is a medium path, 100 is a roll-shaped medium,
Claims (1)
１の送りローラ（15）の回転により前記ロール状媒体
（100）を回転して媒体通路（17）に媒体を繰り出し、
該媒体通路（17）を通過した媒体を第２の送りローラ
（16）の回転により引き続き移送する媒体送り機構にお
いて、 前記第１の送りローラ（15）による媒体送り速度を、前
記第２の送りローラ（16）による媒体送り速度より大き
く設定するとともに、 前記媒体のたるみにより、前記ロール状媒体（100）と
前記第１の送りローラ（15）とがスリップするように、
前記媒体通路（17）の幅を狭く形成した ことを特徴とする媒体送り機構。1. A roll-shaped medium (100) is rotated by the rotation of a first feed roller (15) that supports the lower part of the roll-shaped medium (100), and the medium is fed into a medium passage (17).
In a medium feeding mechanism for continuously transporting a medium passing through the medium passage (17) by rotation of a second feeding roller (16), the medium feeding speed of the first feeding roller (15) is set to the second feeding speed. The speed is set higher than the medium feeding speed of the roller (16), and the slack of the medium causes the roll-shaped medium (100) and the first feeding roller (15) to slip.
A medium feeding mechanism characterized in that the width of the medium passage (17) is formed narrow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62146908A JPH0798599B2 (en) | 1987-06-15 | 1987-06-15 | Media feeding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62146908A JPH0798599B2 (en) | 1987-06-15 | 1987-06-15 | Media feeding mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63315448A JPS63315448A (en) | 1988-12-23 |
| JPH0798599B2 true JPH0798599B2 (en) | 1995-10-25 |
Family
ID=15418289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62146908A Expired - Fee Related JPH0798599B2 (en) | 1987-06-15 | 1987-06-15 | Media feeding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0798599B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4910411B2 (en) * | 2006-02-01 | 2012-04-04 | セイコーエプソン株式会社 | Roll paper printer, roll paper feed control method, and roll paper feed mechanism |
| CN110902432A (en) * | 2019-12-17 | 2020-03-24 | 泉州市鑫太纺织机械有限公司 | A kind of material intelligent winding device and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61200850U (en) * | 1985-06-04 | 1986-12-16 |
-
1987
- 1987-06-15 JP JP62146908A patent/JPH0798599B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63315448A (en) | 1988-12-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |