JP2005297259A - Serial printer - Google Patents

Serial printer Download PDF

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JP2005297259A
JP2005297259A JP2004113854A JP2004113854A JP2005297259A JP 2005297259 A JP2005297259 A JP 2005297259A JP 2004113854 A JP2004113854 A JP 2004113854A JP 2004113854 A JP2004113854 A JP 2004113854A JP 2005297259 A JP2005297259 A JP 2005297259A
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Prior art keywords
printing
print head
arrangement
print
head
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JP2004113854A
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Japanese (ja)
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Yuji Nakagaki
祐二 中垣
Mitsuharu Shishido
満春 宍戸
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Seiko Precision Inc
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Seiko Precision Inc
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Priority to JP2004113854A priority Critical patent/JP2005297259A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To reduce noise and extend a life of a printing head carried in a serial printer, particularly a wire dot printer. <P>SOLUTION: The serial printer has tip parts of printing wires arranged approximately in a circle around a rotation center C of the printing head. At a first position of the printing head, a high-speed printing arrangement is configured in which every two tip parts of the printing wires are positioned on each of virtual lines L<SB>1</SB>set at equal intervals by a pitch of N to a direction parallel to a movement direction of the printing head, and moreover to a direction orthogonal to the movement direction of the printing head. At a second position of the printing head, a high-density printing arrangement is configured in which every one tip part of the printing wire is positioned on each of virtual lines L<SB>2</SB>set at equal intervals by a pitch of N/2 to the direction parallel to the movement direction L<SB>0</SB>of the printing head, and moreover to the direction orthogonal to the movement direction of the printing head. The arrangement of the tip parts of the printing wires is switched to the high-speed printing arrangement and to the high-density printing arrangement by rotating the printing head by a rotary driving means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、複数の印字要素を有する印字ヘッドがキャリッジに搭載されて記録媒体の搬送方向に対して直交する方向へ移動可能に設けられるシリアルプリンタに関するものである。   The present invention relates to a serial printer in which a print head having a plurality of printing elements is mounted on a carriage so as to be movable in a direction perpendicular to the conveyance direction of a recording medium.

シリアルプリンタでは、複数の印字要素を有する印字ヘッドがキャリッジに搭載されて記録媒体の搬送方向に対して直交する方向へ移動可能に設けられている。印字ヘッドとしては、複数の印字ワイヤを電磁的にあるいは圧電素子により駆動し、印字ワイヤの先端でインクリボンを介してプラテン上の記録媒体にドットマトリクスの記録を形成する構造のものがある。図4は、印字ヘッドの従来構成例を示している(特許文献1)。この印字ヘッド41は、ヘッドフレーム42の基部側に印字要素としての印字ワイヤ43の駆動手段として、複数の鉄心44aとコイル44bとからなる電磁石44が配設してあり、各電磁石44への電流のオン・オフとばね力により印字レバー45を揺動可能としてある。印字ワイヤ43は基端部が各印字レバー45の先端部に固着されており、その先端部がヘッドフレーム42のノーズ部42aから突出可能としてある。ノーズ部42aの先端には印字ワイヤ43をガイドするガイド孔を有したガイド板46が設けてあり、印字ヘッド41が記録媒体と搬送方向と直交する方向へ移動しながら印字ワイヤ43を高速で進退駆動させることにより記録媒体上に印字可能としてある。   In a serial printer, a print head having a plurality of print elements is mounted on a carriage so as to be movable in a direction orthogonal to the recording medium conveyance direction. Some print heads have a structure in which a plurality of print wires are driven electromagnetically or by piezoelectric elements, and dot matrix records are formed on a print medium on a platen via an ink ribbon at the tips of the print wires. FIG. 4 shows a conventional configuration example of a print head (Patent Document 1). In the print head 41, electromagnets 44 including a plurality of iron cores 44 a and coils 44 b are disposed on the base side of the head frame 42 as driving means for the printing wires 43 serving as printing elements. The print lever 45 can be swung by the on / off state and the spring force. The printing wire 43 has a proximal end fixed to the tip of each printing lever 45, and the tip can protrude from the nose portion 42 a of the head frame 42. A guide plate 46 having a guide hole for guiding the print wire 43 is provided at the tip of the nose portion 42a, and the print wire 43 is advanced and retracted at a high speed while the print head 41 moves in a direction perpendicular to the recording medium and the conveyance direction. It is possible to print on a recording medium by being driven.

そして、この種のプリンタでは、図5(a)に示すように、ガイド孔46a…をガイド板46上に2列に配列して印字ワイヤ43を相互に半ピッチずつ上下に位置をずらした千鳥配列と、同図(b)に示すように、隣り合う印字ワイヤ43を印字ヘッドの移動方向(同図矢印方向)と直交する方向に対して同一レベルに位置する配列に切換可能としたものがある。例えば、ガイド板46を図4に記載の切換レバー47によって回動することにより、印字ワイヤ43の配列を切換可能としたものがある(特許文献2)。
特開平6−171115号公報 特開平7−137303号公報
In this type of printer, as shown in FIG. 5A, the guide holes 46a... Are arranged in two rows on the guide plate 46, and the print wires 43 are shifted up and down by half a pitch from each other. As shown in FIG. 4B, the arrangement is such that adjacent print wires 43 can be switched to an arrangement located at the same level with respect to a direction orthogonal to the moving direction of the print head (arrow direction in the figure). is there. For example, there is one in which the arrangement of the printing wires 43 can be switched by rotating the guide plate 46 by a switching lever 47 shown in FIG. 4 (Patent Document 2).
JP-A-6-171115 JP 7-137303 A

ところで、印字ワイヤ43を駆動するための各印字レバー45は円形に並んで配列されているのに対し、ガイド板46のガイド孔は2列の直線状に配列されている。したがって、各印字ワイヤ43は、基端部が円形に並んで配列されているのに対し、その先端部が図5に示すような2列に直線状に並んで配列されていた。このため、印字ワイヤ43の長さが長くなり、しかも印字ワイヤ43の駆動負荷が増大し、印字速度の高速化の妨げとなるばかりでなく、印字ヘッドの寿命が短く、ランニングコストが高くなる原因となっていた。   By the way, the print levers 45 for driving the print wire 43 are arranged in a circle, whereas the guide holes of the guide plate 46 are arranged in two rows of straight lines. Therefore, the printing wires 43 are arranged in a straight line in two rows as shown in FIG. 5 while the base ends are arranged in a circle. For this reason, the length of the printing wire 43 is increased, and the driving load of the printing wire 43 is increased, which not only hinders the increase in the printing speed, but also the life of the printing head is shortened and the running cost is increased. It was.

上記の課題を解決するために、本発明は複数の印字要素を有する印字ヘッドがキャリッジに搭載されて記録媒体の搬送方向に対して直交する方向へ移動可能に設けられるシリアルプリンタについて以下のように具体化したものである。このシリアルプリンタは、記録媒体の搬送路と平行な面内において印字ヘッドをキャリッジに対し第1の位置とこの第1の位置から所定角度回転した第2の位置とに回転する回転駆動手段を有するとともに、第1の位置においては印字要素の先端部が印字ヘッドの移動方向と直交する方向に対しNピッチで等間隔に配列され、かつ第2の位置においては印字要素の先端部が印字ヘッドの移動方向と直交する方向に対しN/2ピッチで等間隔に配列されるように印字要素の先端部を印字ヘッドの回転中心まわりに円形近似に並べて配列したところに特徴がある。このため、印字要素が印字ワイヤである場合には、その長さを短くでき、しかも印字ワイヤの駆動負荷を軽減できる。   In order to solve the above-described problems, the present invention relates to a serial printer in which a print head having a plurality of printing elements is mounted on a carriage so as to be movable in a direction orthogonal to the conveyance direction of a recording medium as follows. It is a materialization. The serial printer has a rotation driving means for rotating the print head to a first position with respect to the carriage and a second position rotated by a predetermined angle from the first position in a plane parallel to the conveyance path of the recording medium. At the first position, the front end portions of the print elements are arranged at equal intervals with an N pitch with respect to the direction orthogonal to the moving direction of the print head, and at the second position, the front end portions of the print elements are It is characterized in that the front end portions of the printing elements are arranged in a circular approximation around the rotation center of the print head so that they are arranged at equal intervals with an N / 2 pitch with respect to the direction orthogonal to the moving direction. For this reason, when the printing element is a printing wire, the length thereof can be shortened and the driving load of the printing wire can be reduced.

また、第1の位置においては印字要素の先端部が印字ヘッドの移動方向に対して平行であってかつ印字ヘッドの移動方向と直交する方向に対しNピッチで等間隔に設けられた各仮想線上に2個ずつ位置し、第2の位置においては印字要素の先端部が印字ヘッドの移動方向に対して平行であってかつ印字ヘッドの移動方向と直交する方向に対しN/2ピッチで等間隔に設けられた各仮想線上に1個ずつ位置するように、印字要素の先端部を印字ヘッドの回転中心まわりに円形近似に並べて配列したところに特徴がある。この場合にも上記同様、印字要素が印字ワイヤである場合にはその長さを短くでき、しかも印字ワイヤの駆動負荷を軽減できる。   Further, at the first position, the leading end of the printing element is parallel to the moving direction of the print head and is on each virtual line provided at equal intervals at N pitches in a direction perpendicular to the moving direction of the print head. 2 at a time, and at the second position, the leading end of the printing element is parallel to the moving direction of the print head and is equally spaced at N / 2 pitches in the direction perpendicular to the moving direction of the print head. The print elements are arranged in a circular approximation around the rotation center of the print head so as to be located one by one on each virtual line. In this case as well, when the printing element is a printing wire, the length can be shortened and the driving load of the printing wire can be reduced.

本発明によれば、印字要素、特に印字要素の先端部を印字ヘッドの回転中心まわりに円形近似に並べて配列したので、特に、印字要素が印字ワイヤである場合にはその長さを短くでき、しかも印字ワイヤの駆動負荷を軽減でき、これにより高速印字が可能になるとともに騒音が減少し、かつ印字ヘッドの耐久性が向上する。   According to the present invention, the printing elements, particularly the front end portions of the printing elements, are arranged in a circular approximation around the rotation center of the printing head, so that the length can be shortened particularly when the printing elements are printing wires, In addition, the driving load of the printing wire can be reduced, thereby enabling high-speed printing, reducing noise, and improving the durability of the print head.

本発明に係るシリアルプリンタとしてワイヤドットプリンタについて説明する。このプリンタの印字ヘッドの構成は電磁石とばねによって、選択された印字ワイヤを進退駆動するものであり、駆動部の原理、構成は上記背景技術の欄で説明したものと同様である。ヘッドフレームの先端部に固着されるガイド板1は、図1に示すように、ガイド孔1a…が印字ヘッドの回転中心Cのまわりに円形近似に並んで配列されている。これらの各ガイド孔1a…には、それぞれ印字要素としての印字ワイヤ2…の先端部が挿通している。したがって、印字ワイヤ2の先端部は、印字ヘッドの回転中心Cのまわりに円形近似に並んで配列されている。この実施の形態における印字ワイヤ2…の数は24個となっているが、その先端部の配列は、図2(a)に示すように、太い両矢印Lで示す印字ヘッドの移動方向と平行かつ印字ヘッドの移動方向と直交する方向に対しNピッチで等間隔に設けられた第1仮想線L…上に2個ずつ位置している。この印字ワイヤ2の先端部の配列は、高速印字に適するものである。また、印字ヘッドを回転中心Cのまわりに反時計方向に所定角度だけ回転させると、図2(b)に示すように、印字ワイヤ2の先端部が矢印Lで示す印字ヘッドの移動方向と平行かつ印字ヘッドの移動方向と直交する方向に対しN/2ピッチの等間隔に設けられた第2仮想線L…上に1個ずつ位置し、高密度印字に適する配列となるようになっている。 A wire dot printer will be described as a serial printer according to the present invention. The configuration of the print head of this printer is to drive a selected print wire forward and backward by an electromagnet and a spring, and the principle and configuration of the drive unit are the same as those described in the background section above. As shown in FIG. 1, the guide plate 1 fixed to the front end portion of the head frame has guide holes 1a... Arranged in a circular approximation around the rotation center C of the print head. These guide holes 1a... Are inserted with leading ends of printing wires 2 as printing elements. Therefore, the front end portion of the printing wire 2 is arranged in a circular approximation around the rotation center C of the printing head. The number of printing wires 2 ... has a 24 in this embodiment, the sequence of the tip, as shown in FIG. 2 (a), the moving direction of the print head indicated by a thick double arrow L 0 Two pieces are positioned on first virtual lines L 1 ... That are arranged at equal intervals with N pitch with respect to a direction that is parallel and orthogonal to the moving direction of the print head. The arrangement of the tips of the printing wires 2 is suitable for high-speed printing. Also, is rotated by a predetermined angle in a counterclockwise direction about the rotational center C of the printhead, as shown in FIG. 2 (b), the tip portion of the printing wire 2 and the moving direction of the printing head shown by arrows L 0 One array is positioned on each of the second virtual lines L 2 ... Provided at equal intervals of N / 2 with respect to the direction that is parallel and perpendicular to the moving direction of the print head, so that an array suitable for high-density printing is obtained. ing.

詳述すると、印字ワイヤ2の先端部の配列は、印字ワイヤ2の基端部が円形状に並んで配置されることから、これに対応して印字ワイヤ2の先端部が円形状に並んで配置されることが望ましい。しかし、印字ワイヤ2の先端部をNピッチで等間隔の第1仮想線L上にそれぞれ2個づつ配置した高速印字配列と、印字ワイヤ2の先端部を第1仮想線Lの間隔よりも狭いN/2ピッチで等間隔の第2仮想線L上にそれぞれ1個づつ配置した高密度印字配列とに切換可能とするため、印字ワイヤ2の先端部が図示のような印字ヘッドの回転中心Cのまわりに円形近似に並んで配列したものとなっている。また、印字ワイヤ2の先端部をこのような配列にすることにより印字レバーに固着されている印字ワイヤ2の基端部と先端部との位置関係から印字ワイヤ2の長さを短くすることができる他、印字ワイヤ2の駆動負荷を軽減することができる。これにより、高速印字が可能になるとともに騒音が減少し、かつ印字ヘッドの耐久性が向上する。なお、印字ワイヤ2の数は24本に限らず任意の数でよく、上記の仮想線L,Lの間隔や回転角度もプリンタの条件に対応して任意に定めることがでる。 More specifically, the arrangement of the distal end portions of the printing wires 2 is such that the proximal end portions of the printing wires 2 are arranged in a circle, and accordingly the distal ends of the printing wires 2 are arranged in a circle. It is desirable to be arranged. However, a high-speed printing sequence respectively disposed two at a time at equal intervals of the first on the imaginary line L 1 in N pitch tip of the printing wire 2, than the distance between the tip portion of the first imaginary line L 1 of the printing wire 2 order to be narrower N / 2 can be switched to the high-density printing sequences, respectively arranged one by one at regular intervals of the second on the imaginary line L 2 at a pitch, the printing wires 2 tip of the print head as shown The rotation center C is arranged side by side in a circular approximation. Further, by arranging the front end portion of the print wire 2 in such an arrangement, the length of the print wire 2 can be shortened from the positional relationship between the base end portion and the front end portion of the print wire 2 fixed to the print lever. In addition, the driving load of the printing wire 2 can be reduced. As a result, high-speed printing is possible, noise is reduced, and the durability of the print head is improved. The number of the printing wires 2 is not limited to 24 and may be any number, and the interval and rotation angle between the virtual lines L 1 and L 2 can be arbitrarily determined according to the conditions of the printer.

印字ワイヤ2の先端部の配列を上記の高密度印字配列と高速印字配列とに切り換えるには、背景技術の欄で説明した印字ヘッドのように、印字ワイヤ2の進退をガイドするガイド板1を印字ヘッドに対して回転させることによって行うことも可能であるが、印字ワイヤ2に負荷がかかるので、印字ヘッド自体を回転させるようにすることが望ましい。図3は印字ヘッドを回転させることにより印字ワイヤ2の先端部の配列を高密度印字配列と高速印字配列とに切り換える回転駆動手段の例を示したものである。回転駆動手段Sは、印字ワイヤ2の先端部の配列が高速印字配列となる第1の位置と、印字ワイヤ2の先端部の配列が高密度印字配列となる第2の位置とに印字ヘッド3をキャリッジ4に対し所定角度だけ回転駆動可能となっている。この回転駆動手段Sは、記録媒体の搬送方向と直交する方向に移動可能に設けられるキャリッジ4に取り付けられる固定台5を有している。固定台5は記録媒体の搬送路と平行な面内において印字ヘッド3を回転中心C(図1、図2に図示)回りに回転可能に支持している。キャリッジ4にはソレノイド6が取り付けられており、このソレノイド6によって印字ヘッド3が記録媒体の搬送路と平行な面内において回転中心C(図1、図2に図示)回りに回転駆動されるようになっている。   In order to switch the arrangement of the tips of the printing wire 2 between the high-density printing arrangement and the high-speed printing arrangement, a guide plate 1 that guides the advancement and retraction of the printing wire 2 is used as in the print head described in the background art section. Although it is possible to perform the rotation by rotating the print head, it is desirable to rotate the print head itself because a load is applied to the print wire 2. FIG. 3 shows an example of rotation driving means for switching the arrangement of the tip end portion of the printing wire 2 between the high-density printing arrangement and the high-speed printing arrangement by rotating the printing head. The rotation driving means S is arranged so that the print head 3 is positioned at a first position where the arrangement of the leading ends of the printing wires 2 is a high-speed printing arrangement and a second position where the arrangement of the leading ends of the printing wires 2 is a high-density printing arrangement. Can be rotated with respect to the carriage 4 by a predetermined angle. The rotational driving means S has a fixed base 5 attached to a carriage 4 provided so as to be movable in a direction orthogonal to the conveyance direction of the recording medium. The fixed base 5 supports the print head 3 so as to be rotatable about a rotation center C (shown in FIGS. 1 and 2) in a plane parallel to the conveyance path of the recording medium. A solenoid 6 is attached to the carriage 4 so that the print head 3 is driven to rotate about a rotation center C (shown in FIGS. 1 and 2) in a plane parallel to the recording medium conveyance path. It has become.

ソレノイド6から印字ヘッド3への駆動力の伝達は、印字ヘッド3の前面下方に設けられたリンク機構8の各リンク8a,8b,8cを介して行われる。リンク8cの他端部は印字ヘッド3の下部に設けられた支軸3dに回転可能に連結してある。支軸3dには他端を固定台5に掛止された復帰ばね7が掛止してあり、これによって印字ヘッド3が回転中心C(図1、図2に図示)回りに反時計方向に付勢されている。このため、ソレノイド6が励磁されていないときには、常に同図(a)に示す第1の位置に保持されるようになっている。印字ヘッド3の回転角は、キャリッジ4に固定された度決めストッパ9a,9bと、支軸3dに一体的に固定された規制片3aとによって規制されるようになっており、ソレノイド6への通電の有無に従ってどちらかの状態に保持されるようにしてある。同図(a)は、ソレノイド6が励磁されておらず、ばね7の付勢力により規制片3aが同図右方のストッパ9aに当接した状態であり、この状態では印字ワイヤ2の先端部の配列が図2(a)に示される高速印字配列となる。同図(c)は、ソレノイド6が励磁されてリンク機構8を介して印字ヘッド3が復帰ばね7の付勢力に抗して時計方向に回転し、規制片3aが同図左方のストッパ9bに当接した状態であり、この状態では、印字ワイヤ2の先端部の配列が図2(b)に示される高密度印字配列となる。   The driving force is transmitted from the solenoid 6 to the print head 3 through the links 8a, 8b, and 8c of the link mechanism 8 provided below the front surface of the print head 3. The other end of the link 8 c is rotatably connected to a support shaft 3 d provided at the lower part of the print head 3. A return spring 7 with the other end hooked to the fixed base 5 is hooked on the support shaft 3d, whereby the print head 3 rotates counterclockwise around the rotation center C (shown in FIGS. 1 and 2). It is energized. For this reason, when the solenoid 6 is not excited, it is always held at the first position shown in FIG. The rotation angle of the print head 3 is regulated by degree-determining stoppers 9a and 9b fixed to the carriage 4 and a regulation piece 3a fixed integrally to the support shaft 3d. It is configured to be held in either state according to the presence or absence of energization. FIG. 6A shows a state in which the solenoid 6 is not excited and the regulating piece 3a is in contact with the stopper 9a on the right side of the drawing by the urging force of the spring 7. In this state, the tip end portion of the printing wire 2 is shown. Is the high-speed printing array shown in FIG. In FIG. 8C, the solenoid 6 is excited and the print head 3 rotates clockwise against the urging force of the return spring 7 via the link mechanism 8, and the regulating piece 3a is a stopper 9b on the left side of the figure. In this state, the arrangement of the tips of the printing wires 2 is the high-density printing arrangement shown in FIG.

印字ワイヤ2の先端部の配列を高速印字配列と高密度印字配列とに切り換える印字モードの切換は、プリンタのスイッチ切換により選択可能であるほか、プリンタの操作プラグラムによって選択指定することも可能である。印字モードの切換手段としては、この他、モータとマイクロスイッチの組合せや、ステップモータと歯車機構との組合せなどを採用することも可能である。なお、本発明はワイヤドットプリンタ以外にもインクジェットプリンタ等にも適用可能である。   The switching of the printing mode for switching the arrangement of the tip end portion of the printing wire 2 between the high-speed printing arrangement and the high-density printing arrangement can be selected by switching the printer, or can be selected and designated by the operation program of the printer. . As the print mode switching means, a combination of a motor and a micro switch, a combination of a step motor and a gear mechanism, or the like can be employed. The present invention can be applied to an ink jet printer or the like in addition to a wire dot printer.

本発明はコンピュータ等の出力装置としてのプリンタに関するものであり、製造品及び製造過程ともに産業上利用可能なものである。   The present invention relates to a printer as an output device such as a computer, and both manufactured products and manufacturing processes are industrially applicable.

印字ヘッドのガイド板を示す正面図である。It is a front view showing a guide plate of the print head. 図1のガイド孔及び印字ワイヤの先端部の配列を示すものであり、(a)は高速印字配列、(b)は高密度印字配列を示す。FIGS. 2A and 2B show the arrangement of the guide holes and the tips of the printing wires in FIG. 1. FIG. 1A shows a high-speed printing arrangement and FIG. 1B shows a high-density printing arrangement. 印字ヘッドの回転駆動手段を示すもので、(a)は印字ワイヤの先端部が高速印字配列になっている状態を示す正面図、(b)は(a)の右側面図、(c)は印字ワイヤの先端部が高密度印字配列になっている状態を示す正面図である。Fig. 4 shows a rotation driving means of the print head, (a) is a front view showing a state where the tip end portion of the print wire is in a high-speed printing arrangement, (b) is a right side view of (a), and (c) is It is a front view which shows the state in which the front-end | tip part of a printing wire is a high-density printing arrangement | sequence. 従来技術の印字ヘッドの構成例を示す断面図である。It is sectional drawing which shows the structural example of the print head of a prior art. 従来技術の印字ワイヤの先端部の配列を示すものであり、(a)は高密度印字配列、(b)は高速印字配列の例を示す。The arrangement | sequence of the front-end | tip part of the printing wire of a prior art is shown, (a) is a high-density printing arrangement | sequence, (b) shows the example of a high-speed printing arrangement | sequence.

符号の説明Explanation of symbols

1 ガイド板
1a ガイド孔
2 印字要素(印字ワイヤ)
,L 仮想線
3 印字ヘッド
4 キャリッジ
C 回転中心
S 回転駆動手段
1 Guide plate 1a Guide hole 2 Printing element (printing wire)
L 1 , L 2 Virtual line 3 Print head 4 Carriage C Rotation center S Rotation drive means

Claims (2)

複数の印字要素を有する印字ヘッドがキャリッジに搭載されて記録媒体の搬送方向に対して直交する方向へ移動可能に設けられるシリアルプリンタであって、
上記記録媒体の搬送路と平行な面内において上記印字ヘッドを上記キャリッジに対し第1の位置と当該第1の位置から所定角度回転した第2の位置とに回転する回転駆動手段を有するとともに、上記第1の位置においては上記印字要素の先端部が上記印字ヘッドの移動方向と直交する方向に対しNピッチで等間隔に配列され、かつ上記第2の位置においては上記印字要素の先端部が上記印字ヘッドの移動方向と直交する方向に対しN/2ピッチで等間隔に配列されるように上記印字要素の先端部を上記印字ヘッドの回転中心まわりに円形近似に並べて配列した
ことを特徴とするシリアルプリンタ。
A serial printer in which a print head having a plurality of printing elements is mounted on a carriage and provided so as to be movable in a direction orthogonal to the conveyance direction of a recording medium,
A rotation driving means for rotating the print head to a first position with respect to the carriage and a second position rotated by a predetermined angle from the first position in a plane parallel to the conveyance path of the recording medium; In the first position, the leading end of the printing element is arranged at equal intervals with an N pitch with respect to the direction orthogonal to the moving direction of the printing head, and in the second position, the leading end of the printing element is The front end portions of the print elements are arranged in a circular approximation around the rotation center of the print head so as to be arranged at equal intervals of N / 2 pitch with respect to the direction orthogonal to the moving direction of the print head. Serial printer.
請求項1において、上記第1の位置においては上記印字要素の先端部が上記印字ヘッドの移動方向に対して平行であってかつ上記印字ヘッドの移動方向と直交する方向に対しNピッチで等間隔に設けられた各仮想線上に2個ずつ位置し、上記第2の位置においては上記印字要素の先端部が上記印字ヘッドの移動方向に対して平行であってかつ上記印字ヘッドの移動方向と直交する方向に対しN/2ピッチで等間隔に設けられた各仮想線上に1個ずつ位置するように、上記印字要素の先端部を上記印字ヘッドの回転中心まわりに円形近似に並べて配列したことを特徴とするシリアルプリンタ。 2. The front end portion of the printing element is parallel to the movement direction of the print head and is equally spaced at N pitches in a direction perpendicular to the movement direction of the print head at the first position. Two on each imaginary line provided at the top, and at the second position, the leading end of the printing element is parallel to the movement direction of the print head and orthogonal to the movement direction of the print head. The leading end portions of the print elements are arranged in a circular approximation around the rotation center of the print head so that one on each virtual line provided at equal intervals of N / 2 pitch with respect to the direction of A featured serial printer.
JP2004113854A 2004-04-08 2004-04-08 Serial printer Abandoned JP2005297259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004113854A JP2005297259A (en) 2004-04-08 2004-04-08 Serial printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004113854A JP2005297259A (en) 2004-04-08 2004-04-08 Serial printer

Publications (1)

Publication Number Publication Date
JP2005297259A true JP2005297259A (en) 2005-10-27

Family

ID=35329404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004113854A Abandoned JP2005297259A (en) 2004-04-08 2004-04-08 Serial printer

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Country Link
JP (1) JP2005297259A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009018530A (en) * 2007-07-13 2009-01-29 Oki Data Corp Wire dot printing head and printer
CN107009754A (en) * 2017-03-17 2017-08-04 南京富士通电子信息科技股份有限公司 A kind of printhead noise that reduces goes out pin arrangement mode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009018530A (en) * 2007-07-13 2009-01-29 Oki Data Corp Wire dot printing head and printer
CN107009754A (en) * 2017-03-17 2017-08-04 南京富士通电子信息科技股份有限公司 A kind of printhead noise that reduces goes out pin arrangement mode

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