JPH01241468A - Paper feeding device - Google Patents
Paper feeding deviceInfo
- Publication number
- JPH01241468A JPH01241468A JP6873488A JP6873488A JPH01241468A JP H01241468 A JPH01241468 A JP H01241468A JP 6873488 A JP6873488 A JP 6873488A JP 6873488 A JP6873488 A JP 6873488A JP H01241468 A JPH01241468 A JP H01241468A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- continuous paper
- width
- tractor
- detector
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/26—Pin feeds
- B41J11/32—Adjustment of pin wheels or traction elements, e.g. laterally
Landscapes
- Handling Of Sheets (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、印字機に使用される用紙送り装置に関する
。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to a paper feed device used in a printing machine.
従来の技術
従来、外周に複数のビンを突出させた回転体を有する左
右一対のトラクタを備えた用紙送り装置が存する。2. Description of the Related Art Conventionally, there has been a paper feeding device equipped with a pair of left and right tractors each having a rotating body with a plurality of bins protruding from its outer periphery.
発明が解決しようとする問題点
このようなものは、トラクタのビンを連続用紙の両側に
等ピッチで形成された送り孔に係合させるが、連続用紙
は種類によって紙幅が異なる。このため、連続用紙の幅
が変わる度にトラクタを左右方向へ手で移動させている
が、トラクタの位置は使用者の感覚で定めているに過ぎ
ない、これにより、時によって或いは人によってトラク
タの位置が異なり、微小ではあっても連続用紙の送り孔
の中心に対してトラクタのビンの中心がずれる。Problems to be Solved by the Invention In such a device, a tractor bin is engaged with feed holes formed at equal pitches on both sides of continuous paper, but continuous paper has different paper widths depending on the type. For this reason, the tractor is manually moved left and right each time the width of continuous paper changes, but the position of the tractor is determined only by the user's sense. The position is different, and the center of the tractor bin is shifted from the center of the feed hole of the continuous paper, even if it is slightly.
これにより、連続用紙の送り孔がトラクタのビンで変形
し又は破損し、或いは、連続用紙の左右の送り孔と左右
のトラクタとの係合状態の不均一に基づく負荷の差によ
り、連続用紙の一側がトラクタから外れて蛇行し、これ
により、ジャムが発生したすする問題がある。As a result, the feed hole of the continuous paper may be deformed or damaged by the tractor bottle, or the continuous paper may become damaged due to the difference in load due to the uneven engagement between the left and right feed holes of the continuous paper and the left and right tractors. One side snakes off the tractor, causing a jamming problem.
問題点を解決するための手段
この発明は、印字部を通る連続用紙の経路中に左右一対
のトラクタを前記連続用紙の幅方向に摺動自在に設けて
なる用紙送り装置において、前記連続用紙の経路中にこ
の連続用紙の幅を検出する紙幅検出器を前記トラクタの
上流側に位置させて設け、前記紙幅検出器の検出信号に
より前記トラクタを前記連続用紙の幅方向に移動させる
駆動機構を設けたことを特徴とする。Means for Solving the Problems The present invention provides a paper feed device in which a pair of left and right tractors are provided in the path of continuous paper passing through a printing section so as to be slidable in the width direction of the continuous paper. A paper width detector for detecting the width of the continuous paper is provided in the paper width detector located upstream of the tractor, and a drive mechanism is provided for moving the tractor in the width direction of the continuous paper based on a detection signal from the paper width detector. It is characterized by
作用
したがって、連続用紙は印字部に通される時に紙幅検出
器によって紙幅が検出される。続いて、紙幅検出器の検
出信号に応じて駆動機構が駆動され、トラクタが移動さ
れてトラクタ間の間隔が連続用紙の紙幅に一致される。Operation: Therefore, when the continuous paper is passed through the printing section, the paper width is detected by the paper width detector. Subsequently, the drive mechanism is driven in accordance with the detection signal from the paper width detector, and the tractors are moved so that the interval between the tractors matches the paper width of the continuous paper.
実施例 この発明の一実施例を図面に基づいて説明する。Example An embodiment of the present invention will be described based on the drawings.
ｌは印字部である。この印字部１は横長の印台２とドツ
トプリンタヘッド３とよりなる。このドツトプリンタヘ
ッド３が搭載されたキャリア４は、印台２と平行に架設
されたキャリアシャフト５とキャリアガイド６とに摺動
自在に保持されている。l is a printing section. This printing section 1 consists of a horizontally long printing stand 2 and a dot printer head 3. The carrier 4 on which the dot printer head 3 is mounted is slidably held by a carrier shaft 5 and a carrier guide 6, which are installed parallel to the marking stand 2.
また、印台２の前後にはこの印台２の表面と同一面上に
位置する案内台７，８が固定されている。Furthermore, guide stands 7 and 8 are fixed to the front and rear of the marking stand 2, which are located on the same surface as the surface of the marking stand 2.
さらに、ドツトプリンタヘッド３と印台２との間には、
リボンカセット９から引き出されたインクリボン１０が
通されている。さらに、印台２の上流側の案内台７には
、印台２と平行な細長の透光部１１が形成されていると
ともに、用紙案内板１２が左右方向に位置調整自在に取
り付けられている。さらに、案内台７を間にしてモータ
（図示せず）に駆動される送りローラ１３と左右一対の
揺動アーム１５に保持された押えローラ１４ｂとが対向
され、下流側の案内台８の下方にも送りローラ１３と同
様の送りローラ（図示せず）が設けられ、この送りロー
ラに弾発的に接触する抑圧ローラ１３ｂが回転自在に設
けられている。さらに、反射型の光電変換素子により形
成された紙幅検出器１６を保持するセンサキャリア１７
が透光部１１に沿って移動するようにシャフト１８に摺
動自在に嵌合されている。そして、一方が正逆回転自在
のモータ１９に駆動される左右一対のプーリ２０が設け
られ、これらのプーリ２０に巻回されたベルト２１の一
部がセンサキャリア１７に止着されている。さらに、モ
ータ１９の近傍にはセンサキャリア１７に干渉してこの
センサキャリア１７のホームポジションを検出するホー
ムポジション検出器２２が取り付けられている。Furthermore, between the dot printer head 3 and the marking stand 2,
An ink ribbon 10 pulled out from a ribbon cassette 9 is passed through. Further, the guide stand 7 on the upstream side of the mark stand 2 is formed with an elongated transparent section 11 parallel to the mark stand 2, and a paper guide plate 12 is attached to the guide stand 7 so as to be adjustable in the left and right directions. Further, a feed roller 13 driven by a motor (not shown) and a presser roller 14b held by a pair of left and right swinging arms 15 are opposed to each other with the guide table 7 in between, and are arranged below the guide table 8 on the downstream side. A feed roller (not shown) similar to the feed roller 13 is also provided, and a suppression roller 13b that resiliently contacts this feed roller is rotatably provided. Further, a sensor carrier 17 holding a paper width detector 16 formed by a reflective photoelectric conversion element
is slidably fitted onto the shaft 18 so as to move along the transparent portion 11 . A pair of left and right pulleys 20, one of which is driven by a motor 19 that can freely rotate in forward and reverse directions, is provided, and a portion of a belt 21 wound around these pulleys 20 is fixed to the sensor carrier 17. Further, a home position detector 22 is attached near the motor 19 to interfere with the sensor carrier 17 and detect the home position of the sensor carrier 17.
次いで、案内台８の下流側には断面が角形の駆動軸２３
に駆動される左右一対のトラクタ２４が設けられている
。これらのトラクタ２４は、駆動軸２３に沿って摺動さ
れるホルダ２５と、これらのホルダ２５に保持されて駆
動軸２３の回転を受けるベルト（図示せず）と、ホルダ
２５の上面に起伏自在に取り付けられた紙押え２６とよ
りなる。Next, on the downstream side of the guide table 8, there is a drive shaft 23 having a square cross section.
A pair of left and right tractors 24 are provided. These tractors 24 include holders 25 that slide along the drive shaft 23, a belt (not shown) that is held by these holders 25 and receives rotation of the drive shaft 23, and a belt that is movable on the upper surface of the holder 25. It consists of a paper presser 26 attached to.
これらのベルトは外周に等ピッチで配列されたビンを有
する。しかして、トラクタ２４のホルダ２５を駆動軸２
３に沿って移動させる駆動機構２７が設けられている。These belts have bins arranged at equal pitches around the circumference. Thus, the holder 25 of the tractor 24 is attached to the drive shaft 2.
A drive mechanism 27 is provided for movement along the line 3.
この駆動機構２７は、二つの正逆回転自在のトラクタモ
ータ２８と、個々にこれらのトラクタモータ２８に連結
されて回転する二本のスクリュー２９とよりなる。一方
のスクリュー２９は一方のホルダ２５にのみ螺合され他
方のホルダ２５に対しては相対的に軸心方向の動きを許
容するように嵌合されている。さらに、左右のトラクタ
２４の外側には、それぞれトラクタ２４に干渉してトラ
クタ２４のホームポジションを検出するホームポジショ
ン検出器３０が設けられている。This drive mechanism 27 includes two tractor motors 28 that can freely rotate in forward and reverse directions, and two screws 29 that are individually connected to these tractor motors 28 and rotate. One screw 29 is screwed into only one holder 25 and fitted into the other holder 25 so as to allow relative movement in the axial direction. Furthermore, home position detectors 30 are provided outside the left and right tractors 24, respectively, to interfere with the tractors 24 and detect the home positions of the tractors 24.
このような構成において、揺動アーム１５を把持して抑
圧ローラ１４ｂを送りローラ１３から隨反させ、第２図
に示すように、案内台７の上に連続用紙３１を置き、用
紙案内板１２を移動させて連続用紙３１の両側縁に接触
させ、連続用紙３１の上を抑圧ローラ１４ｂにより押え
る。この時の揺動アーム１５の下降動作はアーム検出器
（図示せず）により検出され、この検出信号により送り
ローラ１３の始動が許容される。送りローラ１３が始動
されると連続用紙３１が印字部１に向けて送られる。こ
れにより、搬送路の中央部に位置する紙幅検出器１６が
連続用紙３１の先端縁を検出する。この検出信号の出力
時から送りローラ１３が駆動される期間は連続用紙３１
の送り長さにして第３図に示すａなる長さである。すな
わち、紙幅検出器１６が連続用紙３１の両側に形成され
た送り孔３２の中心を通る直線３３上に位置した時に送
りローラ１３が一旦停止される。この間に、モータ１９
が一方向に駆動されるためベルト２１が引かれ、紙幅検
出器１６はセンサキャリア１７とともに右方に移動され
る。ホームポジション検出器２２が右端に達したセンサ
キャリア１７を検出するとモータ１９の回転方向が反転
され、センサキャリア１７が右方のホームポジションか
ら左方に向けて移動され、この紙幅検出器１６の検出時
間は連続用紙３１の紙幅又は左右の送り孔３２の中心距
離に一致する。このデータはＲＡＭ （図示せず）に記
憶される。In such a configuration, the swinging arm 15 is gripped to move the suppression roller 14b away from the feed roller 13, and as shown in FIG. are moved to contact both side edges of the continuous paper 31, and the top of the continuous paper 31 is pressed by the pressing roller 14b. The downward movement of the swing arm 15 at this time is detected by an arm detector (not shown), and this detection signal allows the feed roller 13 to start. When the feed roller 13 is started, the continuous paper 31 is fed toward the printing section 1. As a result, the paper width detector 16 located at the center of the conveyance path detects the leading edge of the continuous paper 31. The period during which the feed roller 13 is driven from the time when this detection signal is output is when the continuous paper 31
The feed length is a as shown in FIG. That is, when the paper width detector 16 is positioned on a straight line 33 passing through the center of the feed holes 32 formed on both sides of the continuous paper 31, the feed roller 13 is temporarily stopped. During this time, motor 19
Since the belt 21 is driven in one direction, the belt 21 is pulled, and the paper width detector 16 is moved to the right together with the sensor carrier 17. When the home position detector 22 detects the sensor carrier 17 that has reached the right end, the rotation direction of the motor 19 is reversed, the sensor carrier 17 is moved from the right home position to the left, and the paper width detector 16 detects The time corresponds to the paper width of the continuous paper 31 or the center distance between the left and right feed holes 32. This data is stored in RAM (not shown).
次いで、送りローラ１３が再び駆動され、他方では、左
右のトラクタモータ２８が一方向に回転され、スクリュ
ー２９の一方向の回転により左右のトラクタ２４が外側
に向けて移動される。トラクタ２４に干渉するホームポ
ジション検出器３０が検出信号を出力するとトラクタモ
ータ２８の回転方向が反転され、スクリュー２９の他方
向への回転によりトラクタ２４が外側のホームポジショ
ンを基準として内方に移動される。この時のトラクタモ
ータ２８の回転角はＲＡＭのデータすなわち連続用紙３
１の紙幅に対応される。したがって、トラクタ２４の間
隔は連続用紙３１の紙幅に一致される。そして、送りロ
ーラ１３によって送られた連続用紙３１がトラクタ２４
にセットされる。Next, the feed roller 13 is driven again, and on the other hand, the left and right tractor motors 28 are rotated in one direction, and the left and right tractors 24 are moved outward by the rotation of the screw 29 in one direction. When the home position detector 30 that interferes with the tractor 24 outputs a detection signal, the rotation direction of the tractor motor 28 is reversed, and the rotation of the screw 29 in the other direction causes the tractor 24 to move inward with respect to the outer home position. Ru. The rotation angle of the tractor motor 28 at this time is the data in the RAM, that is, the continuous paper 3
It corresponds to a paper width of 1. Therefore, the interval between the tractors 24 is matched to the paper width of the continuous paper 31. Then, the continuous paper 31 sent by the feed roller 13 is transferred to the tractor 24.
is set to
なお、前記実施例において、左右のトラクタ２４を駆動
機構２７に連結したが、−側のトラクタ２４を任意位置
で固定し、他側のトラクタ２４のみを駆動機構２７によ
り移動させても良いものである。In the above embodiment, the left and right tractors 24 are connected to the drive mechanism 27, but the - side tractor 24 may be fixed at any position and only the other side tractor 24 may be moved by the drive mechanism 27. be.
発明の効果
この発明は上述のように構成したので、連続用紙の紙幅
を紙幅検出器によって検出することができ、また、この
時の検出信号に応じて駆動機構が駆動されるため、極め
て容易に、かつ、正確にトラクタ間の間隔を連続用紙の
紙幅に一致させることができ、これにより、連続用紙の
送り孔の変形や破損を防止することができるとともに、
トラクタからの連続用紙の外れを防止することができる
等の効果を有する。Effects of the Invention Since the present invention is configured as described above, the paper width of the continuous paper can be detected by the paper width detector, and the drive mechanism is driven in accordance with the detection signal at this time, so it is extremely easy to detect the paper width of the continuous paper. In addition, it is possible to accurately match the interval between the tractors to the paper width of the continuous paper, thereby preventing deformation and damage to the feed holes of the continuous paper, and
This has effects such as being able to prevent continuous paper from coming off the tractor.
図面はこの発明の一実施例を示すもので、第１図は一部
を切欠して連続用紙をセットする前の状態を示す斜視図
、第２図は一部を切欠して連続用紙をセットする過程を
示す斜視図、第３図は連続用紙の先端部を示す平面図で
ある。The drawings show an embodiment of the present invention, and Fig. 1 is a perspective view showing the state before continuous paper is set with a portion cut away, and Fig. 2 is a perspective view showing the state before continuous paper is set with a portion cut away. FIG. 3 is a perspective view showing the process of doing this, and FIG. 3 is a plan view showing the leading end of the continuous paper.
Claims (1)
前記連続用紙の幅方向に摺動自在に設けてなる用紙送り
装置において、前記連続用紙の経路中にこの連続用紙の
幅を検出する紙幅検出器を前記トラクタの上流側に位置
させて設け、前記紙幅検出器の検出信号により前記トラ
クタを前記連続用紙の幅方向に移動させる駆動機構を設
けたことを特徴とする用紙送り装置。Paper width detection for detecting the width of the continuous paper during the path of the continuous paper in a paper feeding device including a pair of left and right tractors slidably provided in the width direction of the continuous paper in the path of the continuous paper passing through the printing section. A paper feeding device, characterized in that the paper feeding device is provided with a drive mechanism that moves the tractor in the width direction of the continuous paper based on a detection signal from the paper width detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6873488A JPH01241468A (en) | 1988-03-23 | 1988-03-23 | Paper feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6873488A JPH01241468A (en) | 1988-03-23 | 1988-03-23 | Paper feeding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01241468A true JPH01241468A (en) | 1989-09-26 |
Family
ID=13382315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6873488A Pending JPH01241468A (en) | 1988-03-23 | 1988-03-23 | Paper feeding device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01241468A (en) |
-
1988
- 1988-03-23 JP JP6873488A patent/JPH01241468A/en active Pending
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