JP2003145853A - Dot line printer - Google Patents
Dot line printerInfo
- Publication number
- JP2003145853A JP2003145853A JP2001351930A JP2001351930A JP2003145853A JP 2003145853 A JP2003145853 A JP 2003145853A JP 2001351930 A JP2001351930 A JP 2001351930A JP 2001351930 A JP2001351930 A JP 2001351930A JP 2003145853 A JP2003145853 A JP 2003145853A
- Authority
- JP
- Japan
- Prior art keywords
- printing
- paper
- hammer
- platen
- 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)
- Impact Printers (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は行方向或いは円周方
向に沿って並べて設けられた複数のスプリングチャージ
式印字ハンマを保持したハンマ機構部を、行方向に沿っ
て往復移動させ、この往復移動の過程でドット行を印字
することより文字、図形等を形成するドットラインプリ
ンタに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reciprocates a hammer mechanism portion, which holds a plurality of spring-charged printing hammers arranged side by side in a row direction or a circumferential direction, in a reciprocating direction. The present invention relates to a dot line printer that forms characters, figures, etc. by printing dot lines in the process of.
【0002】[0002]
【従来の技術】図2、図3及び図4にドットラインプリ
ンタの従来技術を示す。2. Description of the Related Art FIGS. 2, 3 and 4 show conventional dot line printers.
【0003】ドットラインプリンタの印字方式は、印字
ハンマ2を有するハンマ機構部1を、図示していないシ
ャトル機構部により、図2中の7の行方向に往復移動す
る。この過程でハンマ機構部1の印字ハンマ2を駆動さ
せ、プラテン4で印字ハンマ2の打撃力を保持し、ある
一定の入射角及び出射角を持って印刷用紙5がプラテン
4に巻き付くような状態で用紙搬送方向8に搬送する紙
送り機構部9、行方向に適時搬送されるインクリボン3
及び前記シャトル動作、紙送り動作、リボン動作により
擦れ合って生じる印刷汚れを防止するためのリボンセパ
レータ6を介して、印字用紙5にドットマトリクスの形
で文字、図形等を印字するものである。In the dot line printer printing method, a hammer mechanism 1 having a print hammer 2 is reciprocated in a row direction 7 in FIG. 2 by a shuttle mechanism not shown. In this process, the printing hammer 2 of the hammer mechanism unit 1 is driven, the striking force of the printing hammer 2 is held by the platen 4, and the printing paper 5 is wound around the platen 4 with a certain incident angle and output angle. Paper feeding mechanism section 9 that conveys in the sheet conveying direction 8 in the state, and the ink ribbon 3 that conveys in the row direction at appropriate times
Characters, figures, etc. are printed in the form of dot matrix on the printing paper 5 via the ribbon separator 6 for preventing printing stains caused by rubbing due to the shuttle operation, the paper feeding operation, and the ribbon operation.
【0004】通常、上記ドットラインプリンタにおい
て、ハンマ機構部1の印字ハンマ2とプラテン4間のギ
ャップは、印字ハンマ2の打撃力及び打撃に要する時間
を一定にするために、10μm単位の精度にて管理され
ている。Usually, in the above dot line printer, the gap between the printing hammer 2 and the platen 4 of the hammer mechanism unit 1 has an accuracy of a unit of 10 μm in order to make the striking force of the printing hammer 2 and the time required for striking constant. Is managed by
【0005】[0005]
【発明が解決しようとする課題】従来技術において、ド
ットラインプリンタの多くは、印字ハンマ2を行方向に
対して垂直方向に多段配列させて印刷速度の向上を図っ
ている。このようなドットラインプリンタの場合、前記
印字ハンマ2とプラテン4間のギャップ量のばらつきを
克服するために、プラテン4は形状をフラットとしてい
るものがある。しかし、行方向に対して垂直方向に配列
する印字ハンマ2に対して前記プラテン4のフラット部
幅が印字打撃面13より大きい程、印字用紙5の打撃面
13に対する上下への逃げが無くなる。その結果、行方
向に印字する過程において、印字用紙5がしごかれる状
態になり、行方向の印字終了付近11で印字用紙5に用
紙皺12が発生し、印字用紙5がプラテン4の打撃面1
3から浮きあがった状態になるため印字力が伝わりにく
くなり、印字濃淡の問題が発生する。この問題は印字用
紙5が複写紙(カーボン紙、感圧紙)に顕著に発生し、
複写紙の部数が多い程、より顕著に発生する。In the prior art, most dot-line printers aim to improve the printing speed by arranging the printing hammers 2 in multiple stages in a direction perpendicular to the row direction. In such a dot line printer, in order to overcome the variation in the gap amount between the printing hammer 2 and the platen 4, the platen 4 has a flat shape. However, as the flat part width of the platen 4 is larger than the print striking face 13 with respect to the print hammers 2 arranged in the direction perpendicular to the row direction, the relief of the print sheet 5 up and down with respect to the striking face 13 is reduced. As a result, in the process of printing in the row direction, the printing paper 5 becomes squeezed, and the paper wrinkles 12 occur on the printing paper 5 near the end 11 of the printing in the row direction, and the printing paper 5 strikes the striking surface of the platen 4. 1
Since it is in a state of being lifted up from 3, the printing force is difficult to be transmitted, and a problem of print density occurs. This problem occurs remarkably on the copy paper 5 (carbon paper, pressure sensitive paper),
The larger the number of copies of the copy paper, the more remarkable the occurrence.
【0006】[0006]
【課題を解決するための手段】上記課題を解決するた
め、本発明では、板バネと印字ピンを備え、印字行方向
に沿って所定ピッチで並べて配置された複数の印字ハン
マと、該印字ハンマを非印字位置に保持するために磁気
吸引力を発生する磁石手段と、前記印字ハンマを駆動す
るために各印字ハンマに対応して設けられたコイルに所
定幅釈放電流を供給することにより印字ハンマを消磁釈
放し駆動するハンマ機構部と、印字ハンマの打撃力を保
持するための印字打撃面部分が平面であるプラテンと、
該プラテンに対してある一定の入射角及び出射角を持っ
て印刷用紙がプラテンに巻き付くような状態で行方向と
垂直に送る紙送り機構部と、紙送り時に擦れ合って印字
用紙に生じる印字汚れを防止するためハンマ機構部に取
り付けられ、インクリボンと印字用紙の間に併設される
リボンセパレータを有するドットラインプリンタにおい
て、前記プラテンに設けられた印字打撃面平面部の用紙
搬送方向の幅を、複数の前記印字ピンの用紙搬送方向の
幅に上下共夫々1.5mm以内とすることを特徴とす
る。In order to solve the above-mentioned problems, according to the present invention, a plurality of print hammers provided with leaf springs and print pins and arranged side by side at a predetermined pitch along the print line direction, and the print hammers are provided. The print hammer by supplying a predetermined width release current to a magnet means for generating a magnetic attraction force for holding the print hammer in a non-printing position and a coil provided corresponding to each print hammer for driving the print hammer. A hammer mechanism that demagnetizes and drives the platen, and a platen that has a flat print striking surface for holding the striking force of the print hammer,
Printing that occurs on the printing paper by rubbing when the paper is fed and the paper feed mechanism that feeds the printing paper perpendicularly to the row direction while winding the printing paper around the platen with a certain incident angle and exit angle with respect to the platen In a dot line printer having a ribbon separator that is attached to a hammer mechanism section to prevent dirt and is provided between an ink ribbon and a print sheet, the width of the flat surface of the print striking surface provided on the platen in the sheet transport direction is set to The width of each of the plurality of print pins in the sheet conveying direction is within 1.5 mm for both the upper and lower sides.
【0007】また、ドットラインプリンタにおいて、前
記プラテンに設けられた印字打撃面平面部の用紙搬送方
向の幅を、複数の前記印字ピンの用紙搬送方向の幅に上
下共夫々約1.0mmとすることを特徴とする。In the dot line printer, the width of the flat surface of the printing striking surface provided on the platen in the paper carrying direction is about 1.0 mm in both the width of the plurality of printing pins in the paper carrying direction. It is characterized by
【0008】[0008]
【発明の実施の形態】次に、本発明を、図1を使用して
説明する。プラテン4以外の構成は従来例と同一のため
説明は省略する。BEST MODE FOR CARRYING OUT THE INVENTION Next, the present invention will be described with reference to FIG. Since the configuration other than the platen 4 is the same as the conventional example, the description thereof will be omitted.
【0009】本発明では、プラテン4の印字部打撃面1
3のフラット部幅を、印字ハンマ2の行方向と平行な方
向において、垂直方向への印字ハンマピンの配列範囲に
対して、どの程度とするかにより、印字の濃淡幅(印字
ずれ)に影響を及ぼす。そのため、印字用紙方向の範囲
をなるべく小さくすることで、前記印字ハンマ2の配列
範囲の上下部分に印字用紙5の逃げ10を設ける効果を
奏する。According to the present invention, the striking surface 1 of the printing portion of the platen 4
The width of the flat portion of No. 3 in the direction parallel to the row direction of the print hammer 2 is influenced by the extent of the arrangement range of the print hammer pins in the vertical direction. Exert. Therefore, by making the range in the printing paper direction as small as possible, there is an effect that the reliefs 10 of the printing paper 5 are provided in the upper and lower portions of the arrangement range of the printing hammer 2.
【0010】ここで、図5は、複写紙における平均印字
濃淡幅を示すグラフである。図5のグラフの横軸は、複
写紙におけるプラテンのフラット部幅(印字ハンマの行
方向に対して垂直方向への配列範囲から上下への幅)を
示し、上下の幅がそれぞれ1〜3mmの場合について試
行したものである。この測定結果によれば、1mmから
1.5mmまでに叙々に印字濃淡の幅が広がり、1.5
mm以上からは急激に広がる。1mmでは、濃淡幅は広
がらないことがわかる。Here, FIG. 5 is a graph showing the average print shade width on the copy paper. The horizontal axis of the graph in FIG. 5 represents the flat portion width of the platen on the copy paper (width from the arrangement range in the vertical direction to the line direction of the printing hammer in the vertical direction), and the vertical width is 1 to 3 mm, respectively. It is a trial of the case. According to the measurement result, the width of the print shade gradually widens from 1 mm to 1.5 mm, and
It spreads rapidly from mm. It can be seen that the shade width does not widen at 1 mm.
【0011】従って、プラテンのフラット部幅をそれぞ
れ上下1.5mm以内まで小さくすることで、前記逃げ
10に用紙皺が発散し、印字用紙5が印字過程において
行方向にしごかれた場合でも用紙皺の発生を回避するこ
とが可能となる。更に、フラット部幅を上下夫々約1m
mとすることで、より効果的に用紙皺の発生を回避する
ことが可能である。Therefore, by reducing the width of the flat portion of the platen to within 1.5 mm in the vertical direction, paper wrinkles diverge in the escape 10 and even if the printing paper 5 is squeezed in the line direction in the printing process. It is possible to avoid the occurrence of. In addition, the width of the flat part is about 1m above and below
By setting m, it is possible to more effectively avoid the occurrence of paper wrinkles.
【0012】従って、従来のプラテン4のフラット部幅
が印字打撃面13より大きいために生じていた印字用紙
5の打撃面13に対する上下への逃げが無くなり、行方
向に印字する過程で印字用紙5がしごかれ、行方向の印
字終了付近11で印字用紙5に用紙皺12が発生し、印
字用紙5がプラテン4の打撃面13から浮きあがった状
態になるため印字力が伝わりにくくなり、印字濃淡の問
題が発生することを解決することが可能となった。Accordingly, there is no escape of the print sheet 5 up and down with respect to the striking surface 13 which occurs because the flat portion width of the platen 4 is larger than the printing striking surface 13, and the print sheet 5 is printed in the process of printing in the row direction. When the printing paper 5 is wrinkled and paper wrinkles 12 occur near the end of printing 11 in the row direction, and the printing paper 5 floats up from the striking surface 13 of the platen 4, the printing force is hard to be transmitted, and printing is performed. It has become possible to solve the problem of light and shade.
【0013】[0013]
【発明の効果】以上詳述したように、本発明によれば、
印字ハンマの打撃力を保持するためのプラテンのフラッ
ト部幅を印字ハンマの行方向に対して垂直方向への配列
範囲から上下共それぞれ1.5mm以内までに小さくす
ることにより、印字用紙が印字過程において行方向にし
ごかれることで発生する用紙皺を回避し、すなわち印字
濃淡の問題を解決するものである。As described in detail above, according to the present invention,
The width of the flat part of the platen for holding the striking force of the printing hammer is reduced to within 1.5 mm both vertically and vertically from the arrangement range in the direction perpendicular to the row direction of the printing hammer, so that the printing paper is printed. The paper wrinkles caused by being squeezed in the line direction are solved, that is, the problem of print density is solved.
【図1】 本発明の一例を示す印字ハンマ周辺の横方向
断面図である。FIG. 1 is a lateral cross-sectional view around a print hammer showing an example of the present invention.
【図2】 従来技術を示すドットラインプリンタの斜視
図である。FIG. 2 is a perspective view of a dot line printer showing a conventional technique.
【図3】 従来技術を示す印字ハンマ周辺の横方向断面
図である。FIG. 3 is a lateral cross-sectional view around a printing hammer showing a conventional technique.
【図4】 従来技術において、用紙皺の発生を示す印字
ハンマ周辺の上部断面図である。FIG. 4 is a cross-sectional top view of the periphery of the printing hammer showing the occurrence of wrinkles in the paper in the prior art.
【図5】 複写紙における印字濃淡幅を示すグラフであ
る。FIG. 5 is a graph showing a print density range on a copy sheet.
1はハンマ機構部、2は印字ハンマ、3はインクリボ
ン、4はプラテン、5は印字用紙、6はリボンセパレー
タ、7はハンマ機構部の往復方向、8は用紙搬送方向、
9は紙送り機構部、10は印字用紙の逃げ、11は行方
向の印字終了付近、12は用紙皺、13は印字打撃面を
示す。1 is a hammer mechanism section, 2 is a printing hammer, 3 is an ink ribbon, 4 is a platen, 5 is a printing sheet, 6 is a ribbon separator, 7 is a reciprocating direction of the hammer mechanism section, 8 is a sheet conveying direction,
Reference numeral 9 is a paper feed mechanism, 10 is a relief of printing paper, 11 is near the end of printing in the row direction, 12 is a paper wrinkle, and 13 is a print striking surface.
Claims (2)
って所定ピッチで並べて配置された複数の印字ハンマ
と、該印字ハンマを非印字位置に保持するために磁気吸
引力を発生する磁石手段と、前記印字ハンマを駆動する
ために各印字ハンマに対応して設けられたコイルに所定
幅釈放電流を供給することにより印字ハンマを消磁釈放
し駆動するハンマ機構部と、印字ハンマの打撃力を保持
するための印字打撃面部分が平面であるプラテンと、該
プラテンに対してある一定の入射角及び出射角を持って
印刷用紙がプラテンに巻き付くような状態で行方向と垂
直に送る紙送り機構部と、紙送り時に擦れ合って印字用
紙に生じる印字汚れを防止するためハンマ機構部に取り
付けられ、インクリボンと印字用紙の間に併設されるリ
ボンセパレータを有するドットラインプリンタにおい
て、前記プラテンに設けられた印字打撃面平面部の用紙
搬送方向の幅を、複数の前記印字ピンの用紙搬送方向の
幅に上下共夫々1.5mm以内とすることを特徴とする
ドットラインプリンタ。1. A plurality of printing hammers provided with leaf springs and printing pins and arranged side by side at a predetermined pitch along the printing line direction, and a magnetic attraction force is generated to hold the printing hammers in a non-printing position. A magnetic mechanism, a hammer mechanism section for demagnetizing and releasing the print hammer by supplying a release current of a predetermined width to a coil provided corresponding to each print hammer for driving the print hammer, and a hammer of the print hammer. A platen whose print striking surface is flat for holding force, and a printing paper that is fed in a direction perpendicular to the row direction such that the printing paper is wrapped around the platen with a certain incident angle and output angle with respect to the platen. It has a paper feed mechanism part and a ribbon separator attached between the ink ribbon and the print paper, which is attached to the hammer mechanism part to prevent the printing stains that may occur on the print paper when the paper is fed. In the dot line printer according to the first aspect of the invention, the width of the flat surface of the printing striking surface provided on the platen in the paper transport direction is within 1.5 mm in the vertical direction with respect to the width of the plurality of print pins in the paper transport direction. Dot line printer.
いて、前記プラテンに設けられた印字打撃面平面部の用
紙搬送方向の幅を、複数の前記印字ピンの用紙搬送方向
の幅に上下共夫々約1.0mmとすることを特徴とする
ドットラインプリンタ。2. The dot line printer according to claim 1, wherein the width of the flat surface of the printing striking surface provided on the platen in the paper transport direction is approximately the same as the width of the plurality of print pins in the paper transport direction. A dot line printer characterized by being 1.0 mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001351930A JP3883050B2 (en) | 2001-11-16 | 2001-11-16 | Dot line printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001351930A JP3883050B2 (en) | 2001-11-16 | 2001-11-16 | Dot line printer |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2003145853A true JP2003145853A (en) | 2003-05-21 |
JP3883050B2 JP3883050B2 (en) | 2007-02-21 |
Family
ID=19164174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001351930A Expired - Fee Related JP3883050B2 (en) | 2001-11-16 | 2001-11-16 | Dot line printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3883050B2 (en) |
-
2001
- 2001-11-16 JP JP2001351930A patent/JP3883050B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3883050B2 (en) | 2007-02-21 |
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