JP2528389B2 - Paper feeding method for continuous paper in printer - Google Patents

Paper feeding method for continuous paper in printer

Info

Publication number
JP2528389B2
JP2528389B2 JP3019427A JP1942791A JP2528389B2 JP 2528389 B2 JP2528389 B2 JP 2528389B2 JP 3019427 A JP3019427 A JP 3019427A JP 1942791 A JP1942791 A JP 1942791A JP 2528389 B2 JP2528389 B2 JP 2528389B2
Authority
JP
Japan
Prior art keywords
paper
continuous
feeding
continuous form
sheet
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 - Lifetime
Application number
JP3019427A
Other languages
Japanese (ja)
Other versions
JPH04341448A (en
Inventor
正 大久保
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PFU Ltd
Original Assignee
PFU Ltd
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 by PFU Ltd filed Critical PFU Ltd
Priority to JP3019427A priority Critical patent/JP2528389B2/en
Publication of JPH04341448A publication Critical patent/JPH04341448A/en
Application granted granted Critical
Publication of JP2528389B2 publication Critical patent/JP2528389B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Controlling Sheets Or Webs (AREA)
  • Advancing Webs (AREA)
  • Handling Of Sheets (AREA)
  • Handling Of Continuous Sheets Of Paper (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、連帳用紙通路の印字
部より上流側にいわゆる押し込み型のピン駆動装置を備
えたプリンタにおける連帳用紙の給紙方法に関するもの
で、特に用紙の給紙開始時および逆送りした後の順送り
開始時に生ずる改行精度の低下を防止する給紙方法に関
するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for feeding continuous form paper in a printer provided with a so-called push-in type pin drive device upstream of the printing section in the continuous form paper path, and more particularly to feeding paper. The present invention relates to a paper feeding method that prevents a decrease in line feed accuracy that occurs at the start and at the start of forward feeding after reverse feeding.

【0002】[0002]

【従来の技術】連帳用紙通路の印字部より上流側にトラ
クタ等のピン駆動装置を配置した押し込み型のプリンタ
は、連帳用紙をピン駆動装置に係合させたまま用紙先端
を印字部から退避させることができるので、連帳用紙の
自動ローディングが容易にできるという特徴があるが、
ピン駆動装置を印字部の下流側に配置した引っ張り型の
ものに比べて、用紙の送り精度が低下するという欠点が
ある。
2. Description of the Related Art A push-type printer in which a pin driving device such as a tractor is arranged on the upstream side of a printing portion of a continuous paper path is a leading edge of the continuous paper which is kept in engagement with the pin driving device from the printing portion. Since it can be evacuated, it is easy to automatically load continuous paper,
There is a drawback in that the paper feeding accuracy is lower than that of the pull type in which the pin driving device is arranged on the downstream side of the printing unit.

【0003】この問題を解決する1つの方法として、図
5に示すように、ピン駆動装置1と印字部2との間にロ
ーラ対3を設け、このローラ対3とピン駆動装置1との
両者で連帳用紙4を給送する構造とし、ローラ対3の用
紙給送量をピン駆動装置1の給送量より若干大きくして
連帳用紙4に引っ張り力を加えることにより、ピン駆動
装置1を引っ張り型として機能させて、送り精度の低下
を回避する構造が実用されている。このときのローラ対
3は、単票用紙給送用のものをそのまま用い、連帳用紙
給送中はローラ対3と用紙との間に若干スリップが生ず
るように、ローラ対3の用紙挟持力を若干小さくしてい
る。
As one method for solving this problem, as shown in FIG. 5, a roller pair 3 is provided between the pin driving device 1 and the printing section 2, and both the roller pair 3 and the pin driving device 1 are provided. The continuous paper 4 is fed by means of a roller drive device, and the paper feed amount of the roller pair 3 is made slightly larger than the feed amount of the pin drive device 1 to apply a pulling force to the continuous paper 4. A structure has been put into practical use in which the is operated as a pull type to avoid a decrease in feed accuracy. At this time, the roller pair 3 is used as it is for feeding single-cut sheets, and the sheet holding force of the roller pair 3 is set so that a slight slip may occur between the roller pair 3 and the sheet during feeding of continuous form paper. Is slightly smaller.

【0004】なお図5に示す従来構造は、印字部2の両
側にローラ対3、5を配置し、単票用紙6は図の左側か
ら右側へ、連帳用紙4は図の右側から左側へと供給して
印字を行う構造のもので、7は単票用紙6の給紙台、8
は単票用紙6の自動給紙用のピックアップローラ、9は
用紙の前端辺を検出するための頭出しセンサ、10は印
刷ヘッド、11はプラテン、12は用紙給送用の正逆転
可能なフィードモータ、13はフィードモータ12とロ
ーラ対3、5との間に巻架された駆動ベルト、14ない
し16はローラ対3とピン駆動装置1とを回転連結して
いる歯車である。単票用紙6を給送するときは、フィー
ドモータ12が図で右回転して単票用紙6を図の左から
右へと給送し、連帳用紙4を給送するときは、フィード
モータ12が図で左回転して連帳用紙4を図の右側から
左側へと給送する。
In the conventional structure shown in FIG. 5, the roller pairs 3 and 5 are arranged on both sides of the printing unit 2, the cut sheet 6 is from the left side to the right side, and the continuous form sheet 4 is from the right side to the left side in the figure. Is a structure for feeding and printing. 7 is a paper feed table for cut sheets 6 and 8
Is a pickup roller for automatically feeding the cut sheet paper 6, 9 is a cueing sensor for detecting the front edge of the sheet, 10 is a print head, 11 is a platen, and 12 is a reversible feed for sheet feeding. A motor, 13 is a drive belt wound between the feed motor 12 and the roller pairs 3 and 5, and 14 to 16 are gears for rotationally connecting the roller pair 3 and the pin driving device 1. When feeding the cut-sheet paper 6, the feed motor 12 rotates right in the figure to feed the cut-sheet paper 6 from the left to the right in the figure, and when feeding the continuous form paper 4, the feed motor 12 12 rotates counterclockwise in the figure to feed the continuous paper 4 from the right side to the left side in the figure.

【0005】上記装置において、連帳用紙4をピン駆動
装置1にセットしてから、第1行目の印字位置を印字部
2に位置決めするまでの動作(用紙先出し)を図6に示
す。ローラ対3、5の上下のローラ相互を軽く当接させ
た状態で、フィードモータ12を図上左回転して連帳用
紙4をピン駆動装置1のピン駆動によって印字部2へと
送り出す。送り出された用紙は、ローラ対3の上下ロー
ラの間を通過してこれに挟持され、さらに送り出されて
頭出しセンサ9が用紙4の先端を検出したときに、フィ
ードモータ12の回転を停止させる。そしてフィードモ
ータ12を逆回転して連帳用紙4の送り戻しを開始し、
頭出しセンサ9がオン(用紙アリ)からオフ(用紙ナ
シ)に切り替わった点を基準として用紙上の第1行の位
置より数mm過剰に用紙を送り戻した後、再びフィード
モータ12を正転(図上左まわり)して過剰に送り戻し
た量だけ順方向に移動させて用紙先出しをする。
FIG. 6 shows the operation (paper advance) from the setting of the continuous form paper 4 in the pin driving device 1 to the positioning of the printing position of the first line in the printing unit 2 in the above apparatus. In a state where the upper and lower rollers of the roller pairs 3 and 5 are lightly brought into contact with each other, the feed motor 12 is rotated counterclockwise in the figure to feed the continuous paper 4 to the printing unit 2 by the pin drive of the pin drive device 1. The fed-out sheet passes between the upper and lower rollers of the roller pair 3 and is nipped by the upper and lower rollers. When the fed-out sensor 9 detects the leading edge of the sheet 4, the feed motor 12 is stopped from rotating. . Then, the feed motor 12 is rotated in the reverse direction to start feeding back the continuous form paper 4,
After feeding the paper back a few mm more than the position of the first line on the paper with reference to the point at which the cueing sensor 9 is switched from ON (paper ant) to OFF (paper none), the feed motor 12 is normally rotated again. (Clockwise on the left side of the figure), move the paper in the forward direction by the amount fed back excessively, and feed the paper out first.

【0006】以上の動作において、頭出しセンサ9が用
紙先端辺を検出してから用紙を逆方向に送り戻している
のは、用紙先端部に印刷不能領域が生じないようにする
ためであり、また過剰に逆送りした後でその過剰量を順
送りでキャンセルしているのはフィードモータ12が逆
転から正転に切り替わったときに、駆動系に内在するバ
ックラッシュによって第1回目の改行量に誤差が生ずる
のを防止するためである。
In the above operation, the cueing sensor 9 detects the leading edge of the sheet and then sends the sheet back in the opposite direction in order to prevent an unprintable area from occurring at the leading edge of the sheet. Further, the excessive amount of reverse feed is canceled by the forward feed because when the feed motor 12 is switched from reverse rotation to normal rotation, the backlash inherent in the drive system causes an error in the first line feed amount. This is to prevent the occurrence of.

【0007】このようにして用紙の先出しが行われた直
後の連帳用紙のマージナルパンチ孔17とピン駆動装置
のピン18の位置関係を誇張して示すと、図7のように
なる。図の矢印は連帳用紙4の給送方向である。すなわ
ち、用紙の先出し時には、最初にピン駆動によって連帳
用紙4が送り込まれるため、ピン18がマージナルパン
チ孔17の前縁側に当接した状態となっている。もちろ
ん、ローラ対3によって用紙先端が挟持された後は、ロ
ーラ対3によって用紙4が若干早送りされるが、その早
送り量は非常にわずかであり、かつローラ対3は印字部
に接近して設けられるため、ピン18がマージナルパン
チ孔17の前縁側に位置するという状態は変わらない。
FIG. 7 is an exaggerated view of the positional relationship between the marginal punch hole 17 of the continuous form paper and the pin 18 of the pin driving device immediately after the paper is first fed out in this manner. The arrow in the figure indicates the feeding direction of the continuous paper 4. That is, when the paper is first fed, the continuous paper 4 is first fed by the pin drive, so that the pin 18 is in contact with the leading edge side of the marginal punch hole 17. Of course, after the front end of the paper is nipped by the roller pair 3, the paper 4 is slightly fast-forwarded by the roller pair 3, but the fast-forwarding amount is very small, and the roller pair 3 is provided close to the printing unit. Therefore, the state in which the pin 18 is located on the front edge side of the marginal punch hole 17 does not change.

【0008】そしてこの状態で印字動作が開始され、連
帳用紙4の改行送りが繰り返されると、ローラ対3の早
送りによって用紙4が少しずつ先送りされ、図8に示す
ように、ピン18がマージナルパンチ孔17の後縁部に
当接するようになり、ピン駆動装置1が連帳用紙4で引
っ張られる状態となって、ピン駆動装置の駆動系に内在
するバックラッシュも除去され、その後初めて用紙4の
送り量がピン駆動装置1によって規制される正規の連帳
給送状態となる。ローラ対3の早送り量をピン駆動装置
1のそれよりもあまり大きくすることはできないから、
用紙の先出しが完了してから正規の送り状態になるまで
に、用紙4が10インチ程度給送されてしまうのが普通
である。
When the printing operation is started in this state and the line feed of the continuous paper 4 is repeated, the paper 4 is advanced little by little by the fast-forwarding of the roller pair 3, and as shown in FIG. The pin drive device 1 comes into contact with the trailing edge of the punched hole 17, and the pin drive device 1 is pulled by the continuous paper 4, and the backlash inherent in the drive system of the pin drive device is also removed. The regular continuous book feed state in which the feed amount of the is regulated by the pin drive device 1 is set. Since the rapid feed amount of the roller pair 3 cannot be made much larger than that of the pin drive device 1,
It is usual that the sheet 4 is fed by about 10 inches from the completion of the first-out of the sheet to the regular feeding state.

【0009】すなわち従来の方法では、連帳用紙を最初
にセットして印刷を開始してから、用紙の改行量がピン
駆動装置1で規制される正確な改行量になるまでに、1
0インチ程度の用紙送りが必要であり、この間の改行精
度は、ローラ対3による連帳用紙4の送り精度に依存
し、正規の改行量より若干大きくなる。
That is, according to the conventional method, it is necessary to set the line feed amount of the continuous sheet of paper from the beginning to start printing until the line feed amount of the sheet reaches the accurate line feed amount regulated by the pin driving device 1.
Paper feed of about 0 inch is required, and the line feed accuracy during this period depends on the feed precision of the continuous paper 4 by the roller pair 3 and is slightly larger than the regular line feed amount.

【0010】以上の説明は、連帳用紙の先出し時のもの
であるが、印刷途中に連帳用紙を逆送りし、再度順送り
を開始したときにも同様なことが起こる。
Although the above description is for the case where the continuous form paper is first-out, the same thing occurs when the continuous form paper is reversely fed during printing and the sequential feeding is started again.

【0011】[0011]

【発明が解決しようとする課題】ローラ対3による改行
精度は、ピン駆動装置1によるそれよりも若干劣るとし
ても、通常の印刷処理において問題となるような誤差は
生じない。連帳用紙4の行送りをピン駆動装置1で規制
する必要があるのは、連帳用紙では集積送り誤差が問題
となるからである。
Even if the line feed accuracy by the roller pair 3 is slightly inferior to that by the pin driving device 1, an error that causes a problem in normal printing processing does not occur. The line feed of the continuous form paper 4 needs to be regulated by the pin drive device 1 because the continuous feed paper causes a problem of stacking and feeding.

【0012】しかしフォーム印刷用紙に第1ページ目か
らわずかの位置ずれもなく印刷することが要求される場
合や、用紙の逆送りを伴う印刷を正確な位置に行わねば
ならないときなどには、上述した改行誤差の存在が問題
となる。たとえばイメージデータを含むページの印刷に
おいて、予め1ページ分の文字データの印刷を行い、用
紙をイメージ印刷位置まで逆送りし、そこからイメージ
部分の印刷を行うという印刷方法を採用しているアプリ
ケーションソフトがかなり存在するが、このようなアプ
リケーションソフトでの印刷処理を図5に示すような従
来手段で行うと、用紙を逆送りした後のイメージデータ
の印刷時に改行誤差が生じ、先に印刷されている文字デ
ータとの間に位置ずれが生ずるという問題が発生する。
However, when it is required to print on the form printing paper without a slight misalignment from the first page, or when the printing accompanied by the reverse feeding of the paper has to be performed at the correct position, the above-mentioned is required. The existence of the line feed error that occurred is a problem. For example, when printing a page containing image data, application software that employs a printing method in which character data for one page is printed in advance, the paper is fed backward to the image print position, and the image part is printed from there. However, if the printing process by such application software is performed by the conventional means as shown in FIG. 5, a line feed error occurs when the image data is printed after the paper is fed backward, and the line is printed first. There is a problem that a positional deviation occurs with the existing character data.

【0013】この発明は、ピン駆動装置を印字部の上流
側に配置したプリンタにおいて、上述した連帳用紙の頭
出し時や逆送り後の順送り開始時に生ずる改行量のずれ
を除去し、いかなる印刷状況のもとにおいても、連帳用
紙の正確な給送を実現できる給紙方法を得ることを課題
としている。
According to the present invention, in a printer in which a pin driving device is arranged on the upstream side of a printing unit, the above-mentioned deviation of the line feed amount occurring at the time of cueing of continuous form paper or starting of forward feeding after reverse feeding is eliminated, and any printing is performed. Even under the circumstances, it is an object to obtain a paper feeding method capable of accurately feeding continuous paper.

【0014】[0014]

【課題を解決するための手段】この発明の方法は、図2
に示すようなプリンタ、すなわち連帳用紙4の通路の印
字部2より上流側にピン駆動装置1が配置され、このピ
ン駆動装置と印字部2との間に連帳用紙の給送時にも用
紙に当接しているローラ対3が配置され、連帳用紙4給
紙時のローラ対3の送り量をピン駆動装置1の送り量よ
りわずかに大きく設定してあるプリンタ装置に採用され
るものである。
The method of the present invention is shown in FIG.
A printer as shown in FIG. 1, that is, a pin driving device 1 is arranged upstream of the printing unit 2 in the passage of the continuous paper 4, and the paper is fed between the pin driving device and the printing unit 2 even when the continuous paper is fed. The roller pair 3 which is in contact with the roller pair 3 is arranged, and the feed amount of the roller pair 3 when feeding the continuous form paper 4 is set to be slightly larger than the feed amount of the pin driving device 1. is there.

【0015】この発明の方法は、連帳用紙4を逆送りす
るときには、ローラ対3(図示構造のものではローラ対
3と5)の用紙挟持力を解放し、かつ負荷部材21で連
帳用紙4の先端側に負荷を与えた状態で逆送りをし、そ
の後連帳用紙4を順送りするときには、負荷部材21に
よる負荷を解除し、かつローラ対3(および5)で再び
連帳用紙4を挟持した状態で順送りを再開することを特
徴とするものである。
According to the method of the present invention, when the continuous form paper 4 is fed backward, the paper holding force of the roller pair 3 (roller pairs 3 and 5 in the illustrated structure) is released, and the load member 21 is used to form the continuous form paper. 4 is reversely fed with a load being applied to the leading end side of the continuous paper 4, and when the continuous form paper 4 is subsequently fed, the load by the load member 21 is released and the continuous form paper 4 is again removed by the roller pair 3 (and 5). It is characterized in that the forward feeding is restarted in the state of being pinched.

【0016】[0016]

【作用】上記の手段によれば、連帳用紙4が逆送りされ
るときには、連帳用紙4に対する逆方向の駆動力がピン
駆動装置のピン18によって与えられることとなり、さ
らに連帳用紙4に逆送りに対する負荷が与えられるた
め、ピン駆動装置のピン18は、図8に示すように、用
紙のマージナルパンチ孔17の後縁側に当接したままの
状態で、連帳用紙4の逆送りが行われる。そして逆送り
が完了した後、連帳用紙4に作用させた負荷を解除し、
さらにピン駆動装置1より送り量の大きなローラ対3
(および5)を当接させて連帳用紙4を挟持した状態で
用紙の順送りを再開するため、この順送りの再開直後か
らピン18がマージナルパンチ孔17の後縁側に当接し
た状態で連帳用紙4が図8の矢印A方向に引っ張られる
ことになり、連帳用紙4の先出し終了直後から、および
印刷途中における逆送り後の順送り開始直後から、用紙
の送り精度がピン駆動装置1によって規制される正規の
送り状態が実現され、いかなる場合においても、連帳用
紙4の送り精度がローラ対3の送り量によって規制され
るという状況が生じないため、送り精度の低下や印刷位
置のずれが生ずることがなくなる。
According to the above means, when the continuous form paper 4 is fed backward, the driving force in the opposite direction to the continuous form paper 4 is given by the pin 18 of the pin driving device, and the continuous form paper 4 is further fed. Since a load is applied to the reverse feeding, the pin 18 of the pin driving device is not fed in reverse while the pin 18 of the pin driving device remains in contact with the trailing edge of the marginal punch hole 17 of the paper. Done. After the reverse feed is completed, the load applied to the continuous paper 4 is released,
Further, the roller pair 3 having a larger feed amount than the pin driving device 1
(And 5) are brought into contact with each other to restart the sequential feeding of the paper while sandwiching the continuous form paper 4, and therefore, immediately after the resumption of the sequential feeding, the continuous form is fed in a state where the pin 18 is in contact with the trailing edge side of the marginal punch hole 17. Since the paper 4 is pulled in the direction of arrow A in FIG. 8, the paper feeding accuracy is regulated by the pin driving device 1 immediately after the continuous feeding of the continuous paper 4 is completed and immediately after the start of the forward feeding after the reverse feeding during printing. The normal feeding state is realized, and in any case, the feeding precision of the continuous paper 4 is not regulated by the feeding amount of the roller pair 3, so that the feeding precision is lowered or the printing position is displaced. It will never happen.

【0017】[0017]

【実施例】次に図1ないし図4に示した実施例について
説明する。図2はこの発明の方法を採用したプリンタの
一例を示したもので、図5に示した従来構造のものに連
帳用紙4の逆送り時に連帳用紙4に負荷を与えるための
可動ガイド21を設けたものである。この発明の方法を
実施するためには、連帳用紙4に負荷を与える可動ガイ
ド21のような部材のほかに、ローラ対3、5の用紙挟
持力を解放する手段が必要であるが、ローラ対3、5の
上下のローラを離隔させる手段は、従来装置においても
備わっている(たとえば特開昭61−199970号、
特開平1−291966号参照)。
EXAMPLE Next, the example shown in FIGS. 1 to 4 will be described. FIG. 2 shows an example of a printer adopting the method of the present invention. In the conventional structure shown in FIG. 5, a movable guide 21 for applying a load to the continuous form paper 4 when the continuous form paper 4 is reversely fed. Is provided. In order to carry out the method of the present invention, in addition to a member such as the movable guide 21 that applies a load to the continuous paper 4, a means for releasing the paper clamping force of the roller pairs 3 and 5 is required. Means for separating the upper and lower rollers of pairs 3 and 5 are also provided in the conventional device (for example, Japanese Patent Laid-Open No. 61-199970,
(See JP-A-1-291966).

【0018】連帳用紙4の逆送り時に可動ガイド21で
用紙4に負荷を与える構造の例を図3に示す。可動ガイ
ド21は、プラテン11と平行に装架された軸22にブ
ラケット23で揺動自在に装着されており、フレーム2
4に一端を係止されて可動ガイド21に図の左回りの付
勢力を与えているアップバネ25と、同様に一端をフレ
ーム24に係止されて可動ガイド21に図の右回りの付
勢力を与えているダウンバネ26との2つの巻バネが設
けられている。そしてアップバネ25の付勢力は、ダウ
ンバネ26の付勢力よりも大きく、従って定常状態にお
いては、可動ガイド21が左回りに付勢され、可動ガイ
ドの先端30は、用紙通路から退避しストッパ27に当
接している。
FIG. 3 shows an example of the structure in which the movable guide 21 applies a load to the paper 4 when the continuous paper 4 is fed backward. The movable guide 21 is mounted on a shaft 22 mounted in parallel with the platen 11 with a bracket 23 so as to be swingable.
4 has one end locked to give the movable guide 21 a counterclockwise biasing force in the figure, and similarly, one end is locked to the frame 24 to give the movable guide 21 a clockwise biasing force in the figure. Two winding springs are provided, including the down spring 26 that is provided. The urging force of the up spring 25 is larger than the urging force of the down spring 26. Therefore, in a steady state, the movable guide 21 is urged counterclockwise, and the leading end 30 of the movable guide retreats from the paper passage and hits the stopper 27. Touching.

【0019】一方アップバネ25に隣接して切り換えカ
ム28が設けられており、図示しない連動機構により、
ローラ対3の離隔動作と連動して切り換えカム28を回
動させることにより、カム28がアップバネ25を図の
左側へ押動させてアップバネ25の先端29と可動ガイ
ド21の係合を解き、可動ガイド21がダウンバネ26
の付勢力によって図で右回動して、可動ガイド21の先
端30が下側ガイド31との間で連帳用紙を挟持して用
紙に摩擦負荷を与える。
On the other hand, a switching cam 28 is provided adjacent to the up spring 25, and by a not-shown interlocking mechanism,
By rotating the switching cam 28 in conjunction with the separating operation of the roller pair 3, the cam 28 pushes the up spring 25 to the left side in the drawing, and the tip 29 of the up spring 25 and the movable guide 21 are disengaged and moved. Guide 21 is down spring 26
In the figure, the tip end 30 of the movable guide 21 sandwiches the continuous form paper with the lower guide 31 to apply a frictional load to the paper.

【0020】図4は、可動ガイド21を揺動させるより
単純な構造を示したもので、可動ガイド21を軸22ま
わりに右回りに付勢しているアップバネ25と、可動ガ
イドの先端30を下方に引き降ろすソレノイド32とを
設けたもので、ソレノイド32は、バネ33を介して可
動ガイド21の先端30と連結されている。この構造で
は、連帳用紙4を逆送りするときにソレノイド32を励
磁することによって、可動ガイドの先端30を下降さ
せ、用紙に摩擦負荷を与えることができる。
FIG. 4 shows a simpler structure in which the movable guide 21 is swung. An up spring 25 for urging the movable guide 21 clockwise around the shaft 22 and a tip 30 of the movable guide are shown. A solenoid 32 for pulling down is provided. The solenoid 32 is connected to the tip 30 of the movable guide 21 via a spring 33. In this structure, by exciting the solenoid 32 when the continuous form paper 4 is fed backward, the tip 30 of the movable guide can be lowered and a friction load can be applied to the paper.

【0021】次に図1に示すフローチャートを参照し
て、連帳用紙4の先出し時の動作を説明する。連帳用紙
4をピン駆動装置1にセットし、フィードモータ12を
図2で左回転させて印字部2に向けて送り出す。このと
き用紙のマージナルパンチ孔17とピン駆動装置のピン
18との位置関係は、図7のようになっている。用紙4
の先端が頭出しセンサ9によって検出された後、ローラ
対3、5の上方のローラを上昇させて用紙挟持力を解放
するとともに、可動ガイド21を右揺動させて用紙4の
先端を可動ガイドの先端30と下側ガイド31との間で
挟持する。この状態でフィードモータ12を右回転させ
て連帳用紙4を送り戻し、連帳用紙4の先端が頭出しセ
ンサ9の位置を通過してセンサ9の出力がオンからオフ
に変化したタイミングを基準として所定量用紙4を送り
戻す。所定量の送り戻しが完了した後、フィードモータ
12を停止し、可動ガイド21を図上左回動して連帳用
紙4への負荷を解除するとともに、ローラ対3で再び連
帳用紙4を挟持する。連帳用紙4のマージナルパンチ孔
17とピン駆動装置のピン18との関係は、可動ガイド
21で連帳用紙4に負荷を与えた状態で用紙の逆送りを
開始した後すぐに、図8に示すように、ピン18がマー
ジナルパンチ孔17の後縁側に当接した状態となり、こ
の状態のまま用紙4がローラ対3で挟持される。そして
この状態から駆動系に内在するバックラッシュを除去す
るために、用紙4を数mm順方向に移動させることによ
り、連帳用紙の先出しを完了する。
Next, with reference to the flow chart shown in FIG. 1, the operation when the continuous form paper 4 is first fed out will be described. The continuous form paper 4 is set in the pin driving device 1, and the feed motor 12 is rotated counterclockwise in FIG. At this time, the positional relationship between the marginal punch hole 17 of the sheet and the pin 18 of the pin driving device is as shown in FIG. Paper 4
After the leading edge of the sheet is detected by the cueing sensor 9, the rollers above the roller pairs 3 and 5 are lifted to release the sheet holding force, and the movable guide 21 is swung to the right to move the leading edge of the sheet 4 to the movable guide. It is clamped between the tip 30 and the lower guide 31. In this state, the feed motor 12 is rotated to the right to feed back the continuous paper 4 and the timing at which the output of the sensor 9 changes from on to off with the leading edge of the continuous paper 4 passing the position of the cueing sensor 9 is used as a reference. As a predetermined amount, the sheet 4 is sent back. After the feeding back by a predetermined amount is completed, the feed motor 12 is stopped, the movable guide 21 is rotated to the left in the figure to release the load on the continuous paper 4, and the roller pair 3 again moves the continuous paper 4 again. Hold it. The relationship between the marginal punch hole 17 of the continuous form sheet 4 and the pin 18 of the pin driving device is shown in FIG. 8 immediately after the reverse feed of the sheet is started while the movable guide 21 applies a load to the continuous form sheet 4. As shown, the pin 18 comes into contact with the trailing edge side of the marginal punch hole 17, and the sheet 4 is nipped by the roller pair 3 in this state. Then, in order to remove the backlash inherent in the drive system from this state, the paper 4 is moved in the forward direction by several mm, whereby the continuous feeding of the continuous paper is completed.

【0022】以上の説明は、連帳用紙の先出し時のもの
であるが、連帳用紙の印刷途中における連帳用紙4の逆
送りも、ローラ対3、5の用紙挟持力を解放し、可動ガ
イド21で用紙に負荷を与えた状態で行われる。この場
合においては、用紙の逆送り開始時のピン駆動装置のピ
ン18と用紙のマージナルパンチ孔17の関係は、図8
に示す位置関係にあり、用紙の逆送り時にもこの状態を
保ったまま逆送りされ、用紙の順送りおよび逆送りをど
のように繰り返しても、図8のピン18とマージナルパ
ンチ孔17の位置関係が変化することはない。従って連
帳用紙4の逆送りを含むどの状態においても、連帳用紙
4の位置はピン駆動装置1の送り量を基準として位置決
めされており、用紙の正確な行送り位置は常に保証され
る。
The above description is for the case where the continuous form paper is fed out first. However, even when the continuous form paper 4 is reversely fed during the printing of the continuous form paper, the paper nipping force of the roller pairs 3 and 5 is released to move the continuous form paper. The guide 21 is performed with a load applied to the sheet. In this case, the relationship between the pin 18 of the pin driving device and the marginal punch hole 17 of the sheet at the time of starting the backward feeding of the sheet is as shown in FIG.
The positional relationship between the pins 18 and the marginal punch holes 17 shown in FIG. 8 is maintained regardless of how the sheet is forward- or backwards fed. Does not change. Therefore, in any state including the backward feeding of the continuous form sheet 4, the position of the continuous form sheet 4 is positioned with reference to the feed amount of the pin driving device 1, and the accurate line feed position of the sheet is always guaranteed.

【0023】[0023]

【発明の効果】以上説明したように、この発明の方法に
よれば、印字部の上流側にピン駆動装置を設けたプリン
タ装置における連帳用紙の改行位置精度が、常にピン駆
動装置によって規制されることとなり、しかもピン駆動
装置の駆動系のバックラッシュやピン駆動装置のピンと
用紙のマージナルパンチ孔との隙間が常に一定の方向に
押し付けられた状態で用紙の順送りおよび逆送りが行わ
れるので、逆送りを含む連帳用紙の給送においても、用
紙送りのわずかな狂いも生ずることがなく、極めて高い
改行精度が実現され、逆送りを含む紙送りによって印刷
を行うときにも位置ずれのない印刷が可能になる。
As described above, according to the method of the present invention, the line feed position accuracy of continuous form paper in a printer device provided with a pin driving device on the upstream side of the printing section is always regulated by the pin driving device. In addition, since the backlash of the drive system of the pin drive device and the gap between the pin of the pin drive device and the marginal punch hole of the paper are always pressed in a fixed direction, the paper is fed forward and backward, so Even when feeding continuous form paper including reverse feed, a slight deviation in paper feed does not occur, extremely high line feed accuracy is realized, and printing without misalignment even when printing by paper feed including reverse feed Will be possible.

【図面の簡単な説明】[Brief description of drawings]

【図1】用紙先出し時のこの発明の方法を示すフローチ
ャート。
FIG. 1 is a flowchart showing the method of the present invention when the paper is first fed.

【図2】本発明方法が採用されるプリンタの一例を模式
的に示す側面図。
FIG. 2 is a side view schematically showing an example of a printer in which the method of the present invention is adopted.

【図3】逆送り用紙への送り負荷の付与装置を示す側面
図。
FIG. 3 is a side view showing a device for applying a feeding load to reverse feed paper.

【図4】送り負荷付与装置の他の例を示す側面図。FIG. 4 is a side view showing another example of the feed load applying device.

【図5】従来の同種のプリンタの一例を示す側面図。FIG. 5 is a side view showing an example of a conventional printer of the same type.

【図6】従来装置における用紙先出し動作を示すフロー
チャート。
FIG. 6 is a flowchart showing a paper advance operation in the conventional apparatus.

【図7】ピンがマージナルパンチ孔の前縁部に当接した
ときの平面図。
FIG. 7 is a plan view when a pin contacts a front edge portion of a marginal punch hole.

【図8】ピンがマージナルパンチ孔の後縁部に当接した
ときの平面図。
FIG. 8 is a plan view when the pin comes into contact with the trailing edge of the marginal punch hole.

【符号の説明】[Explanation of symbols]

1 ピン駆動装置 2 印字部 3 ローラ対(右側) 4 連帳用紙 5 ローラ対(左側) 17 マージナルパンチ孔 18 ピン 21 可動ガイド 1 pin drive 2 printing unit 3 roller pair (right side) 4 continuous form paper 5 roller pair (left side) 17 marginal punch hole 18 pin 21 movable guide

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 連帳用紙(4)の通路の印字部(2)よ
り上流側にピン駆動装置(1)が配置され、このピン駆
動装置と印字部(2)との間に用紙を挟持して給送する
ローラ対(3)が配置され、連帳用紙(4)の給紙時の
ローラ対(3)の送り量をピン駆動装置(1)の送り量
よりわずかに大きく設定してあるプリンタ装置における
連帳用紙の給紙方法において、前記ローラ対(3)を閉じた状態で ピン駆動装置(1)
に装填された連帳用紙(4)を順送りし、連帳用紙
(4)を逆送りするときには、前記ローラ対(3)の用
紙挟持力を解放し、かつ連帳用紙(4)の前記ローラ対
(3)より用紙先端側に負荷を与えた状態で逆送りを
し、その後連帳用紙(4)を順送りするときには、前記
負荷を解除し、かつ前記ローラ対(3)で再び連帳用紙
(4)を挟持した状態で順送りを再開することを特徴と
する、プリンタにおける連帳用紙の給紙方法。
1. A pin driving device (1) is arranged upstream of a printing part (2) in a passage of continuous form paper (4), and the paper is sandwiched between the pin driving device and the printing part (2). A pair of rollers (3) for arranging and feeding are arranged, and the feeding amount of the pair of rollers (3) at the time of feeding the continuous paper (4) is slightly smaller than that of the pin driving device (1) In a method of feeding continuous form paper in a printer device that is set to a large size , a pin driving device (1) is used with the roller pair (3) closed.
The continuous paper sheet loaded (4) and forward to, when the reverse feed the continuous form paper (4), said roller releases the sheet holding force of the roller pair (3), and continuous form paper (4) pair (3) and a reverse feed in the state of giving a load to the sheet distal to, then when the continuous paper (4) to forward releases the load, and the rollers again the continuous paper (3) A method of feeding continuous form paper in a printer, characterized in that the forward feeding is restarted in the state of sandwiching (4).
JP3019427A 1991-01-19 1991-01-19 Paper feeding method for continuous paper in printer Expired - Lifetime JP2528389B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3019427A JP2528389B2 (en) 1991-01-19 1991-01-19 Paper feeding method for continuous paper in printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3019427A JP2528389B2 (en) 1991-01-19 1991-01-19 Paper feeding method for continuous paper in printer

Publications (2)

Publication Number Publication Date
JPH04341448A JPH04341448A (en) 1992-11-27
JP2528389B2 true JP2528389B2 (en) 1996-08-28

Family

ID=11998979

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3019427A Expired - Lifetime JP2528389B2 (en) 1991-01-19 1991-01-19 Paper feeding method for continuous paper in printer

Country Status (1)

Country Link
JP (1) JP2528389B2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2599462B2 (en) * 1989-07-21 1997-04-09 富士通株式会社 Printer paper feed mechanism

Also Published As

Publication number Publication date
JPH04341448A (en) 1992-11-27

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