JPH0986003A - Paper feed shift correction device in printer - Google Patents
Paper feed shift correction device in printerInfo
- Publication number
- JPH0986003A JPH0986003A JP26918895A JP26918895A JPH0986003A JP H0986003 A JPH0986003 A JP H0986003A JP 26918895 A JP26918895 A JP 26918895A JP 26918895 A JP26918895 A JP 26918895A JP H0986003 A JPH0986003 A JP H0986003A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- tractor
- paper feed
- continuous paper
- printer
- 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
- Handling Of Sheets (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明はプリンタにおける連続紙
の送りズレを修正する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for correcting a continuous paper feeding deviation in a printer.
【0002】[0002]
【従来の技術】一般に、プリンタでは、プラテン上で記
録紙に弛みが生じないようにするために、排紙ローラの
周速を給紙ローラの周速よりも若干大きくして、記録紙
に張力を付与するようにしている。2. Description of the Related Art Generally, in a printer, in order to prevent the slack of the recording paper on the platen, the peripheral speed of the paper discharge roller is set to be slightly higher than the peripheral speed of the paper feed roller so that the recording paper is tensioned. Is given.
【0003】ところが、プッシュトラクタによって連続
紙をプラテンのもとに送り込むようにしたプリンタで
は、単票紙の場合と違って、連続紙を挟持して搬送する
構造となっていないため、連続紙が排紙ローラに引きず
られ易くなる結果、プッシュトラクタによる正常な送り
が損なわれることになるばかりでなく、連続的に記録書
込みを行ったような場合には、プッシュトラクタとの間
の送りズレが蓄積し、パーフォレーションの後縁に接触
した送りピンによって連続紙が破れるか、あるいは、記
録書込み開始位置にズレが生じてしまうといった不都合
が生じる。However, in the printer in which the continuous paper is sent to the platen by the push tractor, unlike the case of the single-cut paper, the continuous paper is not sandwiched and conveyed. As a result of being easily dragged by the paper ejection roller, not only the normal feed by the push tractor is impaired, but also when recording and writing are performed continuously, the feed deviation between the push tractor and However, there is a problem that the continuous paper is broken by the feed pin that is in contact with the trailing edge of the perforation or that the recording / writing start position is displaced.
【0004】[0004]
【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、
定期的に送りズレを修正することによって、連続紙を正
確に搬送することのできる新たなプリンタにおける紙送
りの送りズレ修正装置を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to:
It is an object of the present invention to provide a paper feed deviation correction device for a new printer that can accurately convey continuous paper by correcting the deviations at regular intervals.
【0005】[0005]
【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紙送り修正装置として、プ
ラテンを挟んで搬送方向上手側に連続紙搬送用のトラク
タを、下手側にトラクタよりも若干送り速度の大なる排
紙ローラを配設したプリンタにおいて、連続紙の単位枚
数毎に、連続紙との間のズレ量よりも若干長い距離だけ
トラクタを逆転させ、ついでこの逆転量と等しい量だけ
トラクタを正転させる送りズレ修正手段を設けるように
したものである。That is, the present invention is, as a paper feed correcting device for achieving such a problem, a tractor for carrying continuous paper on the upper side in the carrying direction with a platen interposed, and a tractor on the lower side. In a printer equipped with a paper discharge roller whose feed speed is slightly higher than that of the continuous paper, the tractor is reversed for each unit number of continuous papers by a distance slightly longer than the amount of deviation from the continuous paper, and A feed deviation correcting means for rotating the tractor in the forward direction by an equal amount is provided.
【0006】[0006]
【実施例】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。EXAMPLES Examples of the present invention will be described below. The drawings each show an embodiment of the present invention.
【0007】はじめに、図4をもとに本発明が適用され
るプリンタの紙送り機構について説明すると、プラテン
1を挟むようにしてその紙送り方向上手側には、給紙ロ
ーラ2とプッシュトラクタ3が配設され、また下手側に
は周速がプッシュトラクタ3紙送り速度よりも若干大き
な2組の排紙ローラ対4、4が配設されていて、プッシ
ュトラクタ3は、中間歯車5を介して紙送りモータ6に
より駆動され、また一対の排紙ローラ4、4は、中間歯
車5とこれらの輪列間に配設した電磁クラッチ8を介し
て同じ紙送りモータ6に駆動されて回転するように構成
されている。なお、図中符号9は印字ヘッドを示してい
る。First, the paper feed mechanism of a printer to which the present invention is applied will be described with reference to FIG. 4. The platen 1 is sandwiched between the paper feed roller 2 and the push tractor 3 on the upstream side in the paper feed direction. Two sets of discharge roller pairs 4 and 4 that are provided on the lower side and have a peripheral speed slightly higher than the paper feed speed of the push tractor 3 are arranged. It is driven by the feed motor 6, and the pair of paper discharge rollers 4 and 4 are driven by the same paper feed motor 6 via the intermediate gear 5 and the electromagnetic clutch 8 arranged between these gear trains to rotate. It is configured. Reference numeral 9 in the figure indicates a print head.
【0008】これに対して図2は、プリンタのシーケン
ス制御機構の一部に付加される送りズレの修正制御機構
を示したもので、この送りズレ修正制御機構10は、パ
ルス加減算手段11と、設定手段12と、比較手段13
と、紙送りモータ制御手段14と、電磁クラッチ制御手
段15とによって構成されている。On the other hand, FIG. 2 shows a feed deviation correction control mechanism added to a part of the printer sequence control mechanism. This feed deviation correction control mechanism 10 includes pulse addition / subtraction means 11 and Setting means 12 and comparing means 13
And a paper feed motor control means 14 and an electromagnetic clutch control means 15.
【0009】パルス加減算手段11は、紙送りモータ6
に印加される周波数、もしくは紙送りモータ6の軸に取
付けたロータリエンコーダからのパルスを、紙送りモー
タ6の正転時には加算し、逆転時には減算して、これを
比較手段13に入力する一方、後述する電磁クラッチ制
御手段15からの電磁クラッチON信号を受けてリセッ
トされるように構成されている。The pulse addition / subtraction means 11 is a paper feed motor 6
Or the pulse from the rotary encoder attached to the shaft of the paper feed motor 6 is added when the paper feed motor 6 rotates forward and subtracted when the paper feed motor 6 rotates in reverse, and this is input to the comparison means 13. It is configured to be reset by receiving an electromagnetic clutch ON signal from an electromagnetic clutch control means 15 described later.
【0010】設定手段12は、連続紙1枚当りの長さに
相当するパルス数をn1 と設定し、また、図1(b)に
示したように、連続紙Sを1枚搬送した際に生じる送り
ピン3bとパーフォレーションa前縁との間の隙間をδ
1 、パーフォレーションa後縁との間の隙間をδ2 、紙
送りモータ6とプッシュトラクタ3のベルト3aとの間
に存在するバックラッシュをεとしたときに、プッシュ
トラクタの修正移動量Lが L≧δ1 +δ2 +ε の関係を持つような移動量Lに相当するパルス数をn2
と設定して、これらの各設定値n1 、n2 を比較手段1
3に入力するように構成されている。The setting means 12 sets the number of pulses corresponding to the length of one continuous sheet as n1, and when one continuous sheet S is conveyed as shown in FIG. 1 (b). The gap between the resulting feed pin 3b and the front edge of the perforation a should be δ
1, the clearance between the trailing edge of the perforation a is δ2, and the backlash between the paper feed motor 6 and the belt 3a of the push tractor 3 is ε, the corrected movement amount L of the push tractor is L ≧ The pulse number corresponding to the movement amount L having the relationship of δ1 + δ2 + ε is n2
And the respective setting values n1 and n2 are compared with each other.
3 is configured to be input.
【0011】比較手段13は、パルス加減算手段11か
らのカウント数と、設定手段12からの各設定値n1 、
n2 を比較して、カウント数が設定値n1 と一致した際
には、その一致信号を紙送りモータ制御手段14と電磁
クラッチ制御手段15に出力するように構成されてい
る。The comparison means 13 includes a count number from the pulse addition / subtraction means 11 and each set value n1 from the setting means 12,
When n2 is compared and the count number matches the set value n1, the coincidence signal is output to the paper feed motor control means 14 and the electromagnetic clutch control means 15.
【0012】これに対して、紙送りモータ制御手段14
は、シーケンス制御機構16からの信号によって制御さ
れる一方、比較手段12からの一致信号を受けた際に
は、紙送りモータ6を逆転させてプッシュトラクタ3を
修正移動量Lだけ後退させ、ついで紙送りモータ6を正
転に切換えて、この修正移動量Lと同じ量だけプッシュ
トラクタ3を前進させるよう制御し、また、電磁クラッ
チ制御手段15は、比較手段12からの一致信号を受け
た際には、電磁クラッチ8をOFFにする一方、紙送り
モータ制御手段14からの修正終了信号を受けて電磁ク
ラッチ8をONにするよう制御するように構成されてい
る。On the other hand, the paper feed motor control means 14
Is controlled by a signal from the sequence control mechanism 16, and when the coincidence signal from the comparison means 12 is received, the paper feed motor 6 is rotated in the reverse direction to move the push tractor 3 backward by the correction movement amount L, and When the paper feed motor 6 is switched to the normal rotation, the push tractor 3 is controlled to move forward by the same amount as the corrected movement amount L, and when the electromagnetic clutch control means 15 receives the coincidence signal from the comparison means 12. Is configured to turn off the electromagnetic clutch 8 while receiving a correction end signal from the paper feed motor control means 14 to turn on the electromagnetic clutch 8.
【0013】つぎに、このように構成された紙送り機構
の動作を図1及び図3をもとに説明する。プッシュトラ
クタ3によって連続紙Sをプラテン1に向けて送り込む
と、図示しない紙端検出センサからの検出信号によりパ
ルス加減算手段11は、紙送りモータからの紙送り量に
比例して出力するパルスをカウントしてこれを比較手段
13に入力する(ステップ イ)。Next, the operation of the paper feeding mechanism thus constructed will be described with reference to FIGS. 1 and 3. When the continuous paper S is fed toward the platen 1 by the push tractor 3, the pulse adding / subtracting means 11 counts the pulses output in proportion to the paper feed amount from the paper feed motor by the detection signal from the paper edge detection sensor (not shown). Then, this is input to the comparison means 13 (step a).
【0014】そして、カウント数が、設定手段12から
の連続紙S1頁分のパルス数に相当する設定値n1 に達
成すると(ステップ ロ)、比較手段13は、この一致
信号を電磁クラッチ制御手段15に出力し、電磁クラッ
チ8をOFFにして排紙ローラ対4への駆動力伝達を断
つと同時に(ステップ ハ)、紙送りモータ6を正転か
ら逆転へと切換える(ステップ ニ)。When the count number reaches the set value n1 corresponding to the pulse number for the continuous paper S1 page from the setting means 12 (step B), the comparing means 13 outputs this coincidence signal to the electromagnetic clutch control means 15. Then, the electromagnetic clutch 8 is turned off to stop the transmission of the driving force to the paper discharge roller pair 4 (step C), and at the same time, the paper feed motor 6 is switched from the forward rotation to the reverse rotation (step D).
【0015】ところで、図1(a)に示した紙送り当初
の状態から連続紙Sを1頁分送り出すと、排紙ローラ対
4の周速がプッシュトラクタの周速よりも若干大きく構
成されている関係上、連続紙Sが排紙ローラ対4に引き
ずられる結果、図1(b)に示したように、プッシュト
ラクタ3の紙送りピン3bとパーフォレーションaの前
縁との間には隙間δ1 ができるようになる。By the way, when the continuous paper S is fed by one page from the initial state of the paper feed shown in FIG. 1A, the peripheral speed of the paper discharge roller pair 4 is constructed to be slightly higher than the peripheral speed of the push tractor. Due to the fact that the continuous paper S is dragged by the paper discharge roller pair 4, as shown in FIG. 1B, a gap δ1 is formed between the paper feed pin 3b of the push tractor 3 and the front edge of the perforation a. Will be able to.
【0016】このため、反転に切換えられた紙送りモー
タが、この時点から設定値n2 に相当するパルス数だけ
回転すると(ステップ ホ)、プッシュトラクタ3は、
パーフォレーションaの前後の隙間δ1 、δ2 と、輪列
等の間に介在するバックラッシュの量εの和に相当する
修正移動量L、もしくはこれを若干上回る量Lだけ後退
し、図1(c)に示したように、紙送りピン3bをパー
フォレーションaの後縁に当接させて、連続紙Sを隙間
δ1 に相当する量だけ引き戻す。Therefore, when the paper feed motor switched to the reverse rotation rotates from this point by the number of pulses corresponding to the set value n2 (step E), the push tractor 3 is
The clearances δ1, δ2 before and after the perforation a and the corrected movement amount L corresponding to the sum of the amount ε of the backlash interposed between the train wheel and the like, or the amount L slightly larger than this, are retreated, and FIG. As shown in, the paper feed pin 3b is brought into contact with the trailing edge of the perforation a, and the continuous paper S is pulled back by an amount corresponding to the gap δ1.
【0017】したがって、つぎに設定値n2 との一致信
号により紙送りモータ制御手段14が紙送りモータ6を
正転に切換えて(ステップ ヘ)、紙送りモータ6を設
定値n2 に相当するパルス数だけ回転させると(ステッ
プ ト)、プッシュトラクタ3は、さきの修正移動量L
だけ紙送り方向に回転し、その紙送りピン3bを、パー
フォレーションaの前縁に当接させて、2頁目の連続紙
Sを正しく書込み開始位置に位置決めする。Therefore, next, the paper feed motor control means 14 switches the paper feed motor 6 to the normal rotation by the coincidence signal with the set value n2 (step F), and the paper feed motor 6 is driven by the number of pulses corresponding to the set value n2. When it is rotated only (step), the push tractor 3 is moved by the previous correction movement amount L.
Only in the paper feeding direction, the paper feeding pin 3b is brought into contact with the front edge of the perforation a to correctly position the continuous paper S of the second page at the writing start position.
【0018】そして、この一連の修正操作を終えると、
パルス加減算手段11はリセットされ(ステップ
チ)、また、紙送りモータ制御手段14からの信号によ
り、電磁クラッチ制御手段15は電磁クラッチ8をON
にして、紙送りモータ6、6と排紙ローラ対4とを再び
結合して(ステップ リ)、つぎの給紙動作に入る。When this series of correction operations is completed,
The pulse addition / subtraction means 11 is reset (step
H), and the electromagnetic clutch control means 15 turns on the electromagnetic clutch 8 in response to a signal from the paper feed motor control means 14.
Then, the paper feed motors 6 and 6 and the paper discharge roller pair 4 are connected again (step S1), and the next paper feeding operation is started.
【0019】なお、上述した実施例は、紙送りモータ6
と排紙ローラ対4との間に駆動力を接、断する電磁クラ
ッチ8を介在させるようにしたものであるが、紙送りモ
ータ6と排紙ローラ対4との間の輪列に、修正移動量L
を上回るようなバックラッシュが存在するような場合に
は、この電磁クラッチを省くことができる。In the above embodiment, the paper feed motor 6 is used.
The electromagnetic clutch 8 for connecting and disconnecting the driving force between the sheet feeding roller pair 4 and the sheet discharging roller pair 4 is interposed, but the train wheel between the sheet feeding motor 6 and the sheet discharging roller pair 4 is corrected. Moving amount L
This electromagnetic clutch can be omitted in the case where there is a backlash that exceeds the above.
【0020】また、以上の説明では、送りズレの修正操
作を連続紙Sの1頁毎に行わせるようにしているが、送
りズレが少ない場合には、連続紙Sの数単位毎に上述し
た操作を行わせるようにしてもよい。Further, in the above description, the correction operation of the feed deviation is performed for each page of the continuous paper S, but when the feed deviation is small, it is described above for each unit of the continuous paper S. You may make it operate.
【0021】[0021]
【発明の効果】以上述べたように本発明によれば、トラ
クタよりも紙送り速度が若干大なる排紙ローラを備えた
プリンタに、連続紙の単位枚数毎に、連続紙とのズレ量
よりも若干長い距離だけトラクタを逆転させ、ついでこ
の逆転量と等しい量だけトラクタを正転させるズレ量修
正手段を設けたので、新たな機構を何ら付加することな
く、単に新たなプログラムを組むだけで、連続的な記録
書込みを行った際に生じるトラクタとの間のズレに伴う
連続紙の破損や、書込み開始位置のズレを未然に防ぐこ
とができる。As described above, according to the present invention, a printer provided with a paper discharge roller having a paper feeding speed slightly higher than that of a tractor can be used for each unit number of continuous papers depending on the deviation amount from the continuous paper. Even with a slightly longer distance, the tractor is rotated in the reverse direction, and the deviation amount correction means for rotating the tractor in the normal direction by an amount equal to this reverse rotation amount is provided.Therefore, simply add a new program without adding any new mechanism. It is possible to prevent the continuous paper from being damaged due to the deviation between the continuous paper and the tractor which occurs when the recording and writing are continuously performed, and the deviation of the writing start position.
【図1】本発明の一実施例をなす紙送り機構の動作説明
図である。FIG. 1 is an operation explanatory diagram of a paper feeding mechanism that constitutes an embodiment of the present invention.
【図2】同上紙送り機構の送りズレ修正機構を示した図
である。FIG. 2 is a view showing a feed deviation correcting mechanism of the same paper feeding mechanism.
【図3】同上紙送り機構の送りズレ修正操作を示すフロ
ーチャートである。FIG. 3 is a flowchart showing a feed deviation correcting operation of the same paper feed mechanism.
【図4】本発明が適用されるプリンタの要部を示した図
である。FIG. 4 is a diagram showing a main part of a printer to which the present invention is applied.
1 プラテン 3 プッシュトラクタ 4 排紙ローラ対 6 紙送りモータ 8 電磁クラッチ 10 送りズレ修正制御機構 1 Platen 3 Push Tractor 4 Paper Ejection Roller Pair 6 Paper Feed Motor 8 Electromagnetic Clutch 10 Feed Misalignment Correction Control Mechanism
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小高 俊和 長野県諏訪市大和3丁目3番5号 セイコ ーエプソン株式会社内 (72)発明者 安江 拓也 長野県諏訪市大和3丁目3番5号 セイコ ーエプソン株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshikazu Odaka 3-3-5 Yamato, Suwa-shi, Nagano Seiko Epson Corporation (72) Inventor Takuya Yasue 3-3-5 Yamato, Suwa-shi, Nagano Seiko Epson Within the corporation
Claims (1)
紙搬送用のトラクタを、下手側に該トラクタよりも若干
送り速度の大なる排紙ローラを配設したプリンタにおい
て、 上記連続紙の単位枚数毎に、上記連続紙との間のズレ量
よりも若干長い距離だけ上記トラクタを逆転させ、つい
で該逆転量と等しい量だけ上記トラクタを正転させる送
りズレ修正手段を設けたことを特徴とするプリンタにお
ける紙送りの送りズレ修正装置。1. A printer in which a tractor for transporting continuous paper is disposed on the upstream side of the platen in the transport direction, and a discharge roller at a transport speed slightly higher than that of the tractor is disposed on the downstream side of the tractor. For each number of sheets, there is provided a feed deviation correcting means for reversing the tractor by a distance that is slightly longer than the deviation amount from the continuous paper, and then rotating the tractor forward by an amount equal to the reverse rotation amount. Paper feed misalignment correction device for printers that perform printing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26918895A JP3458874B2 (en) | 1995-09-22 | 1995-09-22 | Paper feed misalignment correction device for printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26918895A JP3458874B2 (en) | 1995-09-22 | 1995-09-22 | Paper feed misalignment correction device for printer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0986003A true JPH0986003A (en) | 1997-03-31 |
JP3458874B2 JP3458874B2 (en) | 2003-10-20 |
Family
ID=17468912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP26918895A Expired - Lifetime JP3458874B2 (en) | 1995-09-22 | 1995-09-22 | Paper feed misalignment correction device for printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3458874B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012056222A (en) * | 2010-09-10 | 2012-03-22 | Seiko Epson Corp | Paper conveyance device and printer |
JP2015037887A (en) * | 2014-11-25 | 2015-02-26 | セイコーエプソン株式会社 | Paper conveyance device and printer |
-
1995
- 1995-09-22 JP JP26918895A patent/JP3458874B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012056222A (en) * | 2010-09-10 | 2012-03-22 | Seiko Epson Corp | Paper conveyance device and printer |
US8840240B2 (en) | 2010-09-10 | 2014-09-23 | Seiko Epson Corporation | Paper conveyance device and printer |
JP2015037887A (en) * | 2014-11-25 | 2015-02-26 | セイコーエプソン株式会社 | Paper conveyance device and printer |
Also Published As
Publication number | Publication date |
---|---|
JP3458874B2 (en) | 2003-10-20 |
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