JP4577102B2 - Dot line printer - Google Patents

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JP4577102B2
JP4577102B2 JP2005170975A JP2005170975A JP4577102B2 JP 4577102 B2 JP4577102 B2 JP 4577102B2 JP 2005170975 A JP2005170975 A JP 2005170975A JP 2005170975 A JP2005170975 A JP 2005170975A JP 4577102 B2 JP4577102 B2 JP 4577102B2
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ribbon
platen
ink ribbon
printing
endless ink
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JP2006341549A (en
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源一郎 川道
聖介 小野瀬
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リコープリンティングシステムズ株式会社
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Description

本発明はドット印字用印字ハンマによりドットマトリックス形式で印字を行う印刷装置に関するものであり、さらに詳しくは印字用のエンドレスインクリボンの汚れ防止機構に関するものである。   The present invention relates to a printing apparatus that performs printing in a dot matrix format using a dot printing print hammer, and more particularly to a mechanism for preventing contamination of an endless ink ribbon for printing.

図5に、ドットラインプリンタの印字機構及び従来のリボン継ぎ目検出マーク検出装置の概略を示す。ドットラインプリンタは、複数個の印字素子30を搭載したハンマバンク31と、前記ハンマバンク31を桁方向に往復運動させるための往復運動手段(図示せず)と、印字用紙32を搬送する用紙搬送機構34と、印字素子30の打撃力を受け止めるプラテン36と、エンドレスインクリボン33を駆動するリボン機構部(図示せず)とを有し、前記往復運動の過程で前記印字素子30を駆動し、エンドレスインクリボン33を介して印字用紙32を打撃することでインクを印字用紙32に転写して印字を行うドットラインプリンタである。エンドレスインクリボン33は両端が溶着してエンドレスに構成されている。このエンドレスインクリボン33には図3に示すように、リボンの両面を使用するためにねじりが加えられたメビウスエンドレスインクリボンと、片面のみを使用するためにねじりを加えていないストレートエンドレスインクリボンとがあり、2種類を総称してエンドレスインクリボンと呼んでいる。   FIG. 5 schematically shows a printing mechanism of a dot line printer and a conventional ribbon seam detection mark detection device. The dot line printer includes a hammer bank 31 on which a plurality of printing elements 30 are mounted, reciprocating means (not shown) for reciprocating the hammer bank 31 in the digit direction, and paper conveyance for conveying the printing paper 32. A mechanism 34, a platen 36 that receives the striking force of the printing element 30, and a ribbon mechanism (not shown) that drives the endless ink ribbon 33, and drives the printing element 30 during the reciprocating motion; The dot line printer performs printing by transferring ink onto the printing paper 32 by striking the printing paper 32 via the endless ink ribbon 33. The endless ink ribbon 33 is endlessly welded at both ends. As shown in FIG. 3, the endless ink ribbon 33 includes a Mobius endless ink ribbon that is twisted to use both sides of the ribbon, and a straight endless ink ribbon that is not twisted to use only one side. The two types are collectively called an endless ink ribbon.

従来は、図7に示すように、エンドレスインクリボン33の溶着部を検出する検出マーク50に光学式透過センサ52の光を通す光透過式、または図6に示すように、エンドレスインクリボン33の溶着部に検出マーク50を施し、光学式反射センサ51からなる光を反射する光反射式、図8に示すようにエンドレスインクリボン33の溶着部を導電性マークの導通で検出する導電式、等を用いエンドレスインクリボン33の溶着部(以下継ぎ目部という)を検出していた(例えば、特許文献1参照)。しかしながら、エンドレスインクリボン33の上下端の印字領域外に施した検出マーク50は端面から2mm程度の幅しかなく、リボンの縒れ又は、リボン走行の際の摩擦により検出マークの剥がれ等により検出の信頼性が低いものであった。   Conventionally, as shown in FIG. 7, a light transmission type that allows the light of the optical transmission sensor 52 to pass through a detection mark 50 that detects a welded portion of the endless ink ribbon 33, or as shown in FIG. A light reflection type in which a detection mark 50 is applied to the welded portion to reflect the light formed by the optical reflection sensor 51, a conductive type in which the welded portion of the endless ink ribbon 33 is detected by conduction of the conductive mark as shown in FIG. Was used to detect a welded portion (hereinafter referred to as a seam portion) of the endless ink ribbon 33 (see, for example, Patent Document 1). However, the detection mark 50 provided outside the print area at the upper and lower ends of the endless ink ribbon 33 has a width of only about 2 mm from the end surface, and the detection mark 50 is detected by the ribbon being bent or the detection mark being peeled off due to friction during ribbon travel. The reliability was low.

この問題を改善するため、検出マーク50を印字領域内を含め全面に設けたものが考案され検出の精度は保たれるようになったが、検出マーク50付きのリボンを用いて検出器を持たないドットラインプリンタで印字を行うと、検出マーク部分のドット抜けまたは検出マーク部分のインクと印字用のインクの成分等の違いにより、印字結果として濃度が異なる印字不良を引き起こしていた。   In order to improve this problem, a detection mark 50 provided on the entire surface including the inside of the print area has been devised to maintain the detection accuracy. However, the detection mark 50 has a detector using a ribbon with the detection mark 50. When printing is performed with a non-dot line printer, a defective print having a different density as a printing result is caused due to missing dots in the detection mark portion or a difference in ink components in the detection mark portion and printing ink.

また、ハンマバンク31に搭載された印字素子30とプラテン36の間隔は一般的に0.3mm程度(間隔D)で、印字用紙32(A)とエンドレスインクリボン33(B)及びリボンセパレータ35(C)の厚さを考慮すると以下に示すように0.04mm程度の余裕しかないため 検出マークを検出し印字動作を止め、エンドレスインクリボン33を巻き取るだけでは、少なからずインクが用紙に付着し印字用紙32表面の汚れとなって現れていた。
・印字用紙(A)=0.08mm
・エンドレスインクリボン(B)=0.12mm
・リボンセパレータ(C)=0.06mm
間隔(D)−{(A)−(B)-(C)}=余裕0.04mm
The interval between the printing element 30 mounted on the hammer bank 31 and the platen 36 is generally about 0.3 mm (distance D), and the printing paper 32 (A), the endless ink ribbon 33 (B), and the ribbon separator 35 ( Considering the thickness of C), there is only a margin of about 0.04 mm as shown below. By detecting the detection mark, stopping the printing operation, and winding up the endless ink ribbon 33, the ink adheres to the paper. The surface of the printing paper 32 appeared as dirt.
・ Printing paper (A) = 0.08mm
・ Endless ink ribbon (B) = 0.12mm
・ Ribbon separator (C) = 0.06mm
Interval (D)-{(A)-(B)-(C)} = 0.04 mm margin

また、狭い間隔をエンドレスインクリボン33を巻取り走行させることで、エンドレスインクリボン33の継ぎ目を傷めていた。従って、継ぎ目の繊維が毛羽立ち汚れを更に引き起こす原因にもなっていた。   Further, the seam of the endless ink ribbon 33 is damaged by winding and running the endless ink ribbon 33 at a narrow interval. Therefore, the seam fibers also caused further fuzzing contamination.

特開昭56−139987号公報JP-A-56-139987

一方、特許文献1には、検出マークとして導電マークを設けた導電式の例も開示されている。導電マークによる継目検出はリボンの縒れ等による信頼性の低下は少ないが、接触方式のため摩擦力による導電マーク部分の剥がれが原因で、検出精度の信頼性が低下していた。更に、前述した光学式、導電式ともにエンドレスインクリボンの表・裏面同一箇所に検出マークを施していた。しかし表・裏面同一箇所に検出マークをつけると、当該導電マーク部分の厚みが他の部分よりも厚くなり走行抵抗が増加するため、検出マークの剥がれやリボン走行不良が発生し、前記光学式は検出マーク部の厚みが増すことによる印字用紙へのインクの付着が発生する。   On the other hand, Patent Document 1 also discloses a conductive example in which a conductive mark is provided as a detection mark. The detection of the seam by the conductive mark has little decrease in reliability due to ribbon bending or the like, but because of the contact method, the reliability of detection accuracy has been reduced due to peeling of the conductive mark portion due to frictional force. Further, both the optical and conductive types described above are provided with detection marks on the same front and back portions of the endless ink ribbon. However, if the detection mark is attached to the same place on the front and back surfaces, the thickness of the conductive mark part becomes thicker than other parts and the running resistance increases, so the detection mark peels off and ribbon running failure occurs. Ink adheres to the printing paper due to an increase in the thickness of the detection mark portion.

そもそも、エンドレスリボンの継ぎ目を所定量印字せずに飛ばす機能の主眼は、エンドレスインクリボンの継ぎ目部を印字した場合、継ぎ目部のほつれ、毛羽立ちによりインクが印字用紙へ転写することを防ぐため、更には継ぎ目の強度向上にある。   In the first place, the main feature of the function of skipping the endless ribbon seam without printing a predetermined amount is to prevent the ink from transferring to the printing paper due to fraying and fluffing of the seam when the seam of the endless ink ribbon is printed. Is to improve the strength of the seam.

以上に鑑み、本発明は、エンドレスインクリボンの継ぎ目部分のインクが印字用紙へ転写することを防ぎ、継ぎ目の寿命向上の目的を満足しつつ、検出精度の低下や検出マーク部の印刷不良といった欠点をなくし、リボンによる汚れ、寿命向上を達成することを目的とする。   In view of the above, the present invention prevents the ink at the seam portion of the endless ink ribbon from being transferred to the printing paper, satisfies the purpose of improving the life of the seam, and has the disadvantages of reduced detection accuracy and defective printing of the detection mark portion. The purpose is to achieve contamination and life improvement by ribbon.

本発明は、複数個の印字素子を搭載したハンマバンクと、該ハンマバンクを桁方向に往復運動させるための往復運動手段と、印字用紙を搬送する用紙搬送機構と、前記ハンマバンクの打撃力を受けるプラテンと、該プラテンを前後に動作させるプラテン開閉機構と、その両端が溶着にてつなぎ合わされたリボン溶着部を有するエンドレスインクリボンと、該エンドレスインクリボンを駆動するリボン機構部と、前記エンドレスインクリボンの進行方向に対して前記リボン溶着部よりも前方側に付した検出マークを検出する検出スイッチを有する検出装置と、前記エンドレスインクリボンのインクが用紙へ付着することを防ぐリボンセパレータとを有し、前記ハンマバンクの往復運動の過程で前記印字素子を駆動し、前記エンドレスインクリボンを介して印字素子を打撃することでインクを印字用紙に転写して印字を行うドットラインプリンタにおいて、前記検出装置の検出スイッチが前記エンドレスインクリボンの検出マークを検出したときには前記ハンマバンクの往復移動を停止し、前記プラテン開閉機構により前記プラテンを後退させて前記ハンマバンクと前記プラテン間の間隔を広げ、前記検出マーク及びインクリボン溶着部が前記ハンマバンクと前記プラテンとの間を通過した後、印刷動作を再開することを特徴とする。The present invention provides a hammer bank equipped with a plurality of printing elements, reciprocating means for reciprocating the hammer bank in the digit direction, a paper transport mechanism for transporting printing paper, and the hammer bank's striking force. A receiving platen, a platen opening / closing mechanism for moving the platen back and forth, an endless ink ribbon having a ribbon welded portion joined at both ends by welding, a ribbon mechanism for driving the endless ink ribbon, and the endless ink A detection device having a detection switch for detecting a detection mark attached to the front side of the ribbon welding portion with respect to the ribbon traveling direction; and a ribbon separator for preventing the ink of the endless ink ribbon from adhering to the paper. And driving the printing element during the reciprocating motion of the hammer bank, In a dot line printer that prints by transferring ink onto printing paper by striking the printing element through the hammer, when the detection switch of the detection device detects the detection mark of the endless ink ribbon, the hammer bank reciprocates. The platen opening / closing mechanism retracts the platen to widen the interval between the hammer bank and the platen, and after the detection mark and the ink ribbon welded portion pass between the hammer bank and the platen, The printing operation is resumed.

また、前記検出装置が前記検出マークを検出し、印刷動作を再開させるまでの間は、前記エンドレスインクリボンの走行速度を通常の印刷動作時よりも高速で搬送させることを特徴とするFurther, the detection device detects the detection mark, until resuming the printing operation, characterized in that for conveying the running speed of the endless ink ribbon at a higher speed than during normal printing operation.

本発明によれば、常にエンドレスインクリボン33の継ぎ目に与える負荷を減らすことが出来、検出マークの耐久性向上により安定した検出信頼性とリボンの継ぎ目寿命向上を図り印字用紙に汚れのない高印字品質を提供することが可能である。   According to the present invention, it is possible to always reduce the load applied to the seam of the endless ink ribbon 33, and to improve the durability of the detection mark so as to improve the stable detection reliability and the life of the ribbon seam. It is possible to provide quality.

以下、本発明を実施例により説明する。   Hereinafter, the present invention will be described with reference to examples.

前述したように、本発明で使用するドットラインプリンタは、図1で示す如く、複数個の印字素子30を搭載したハンマバンク31と、該ハンマバンク31を桁方向に往復運動させるための往復運動手段(図示せず)と、印字用紙32を搬送する紙送り機構部34と、印字素子30の打撃力を受け止めるプラテン36と、該プラテン36を前後に動作させるプラテン駆動用モータ37、及び該プラテン駆動用モータ37と直結された(又は図示していないタイミングベルトを介して)プラテン開閉用カム38により開閉動作を行うプラテン開閉機構と、エンドレスインクリボン33を駆動するリボン機構部(図示せず)とを有し、前記往復運動の過程で前記印字素子30を駆動し、エンドレスインクリボン33を介して印字用紙32を打撃することでインクを印字用紙32に転写して印字を行うドットラインプリンタである。   As described above, as shown in FIG. 1, the dot line printer used in the present invention includes a hammer bank 31 on which a plurality of printing elements 30 are mounted, and a reciprocating motion for reciprocating the hammer bank 31 in the digit direction. Means (not shown), a paper feed mechanism section 34 that conveys the printing paper 32, a platen 36 that receives the striking force of the printing element 30, a platen drive motor 37 that moves the platen 36 back and forth, and the platen A platen opening / closing mechanism that opens and closes by a platen opening / closing cam 38 directly connected to the driving motor 37 (or via a timing belt (not shown)), and a ribbon mechanism unit (not shown) for driving the endless ink ribbon 33 The printing element 30 is driven during the reciprocating motion, and the printing paper 32 is struck through the endless ink ribbon 33. A dot line printer that performs transfer to the printing ink to the printing paper 32 by.

エンドレスインクリボン33は両端を溶着してエンドレスに構成している。また、図1に示すように、エンドレスインクリボン33には、インクリボン溶着部を検出する導電性検出マーク50がエンドレスインクリボン33の進行方向に対して前方側(図3に示す位置関係の通り)に施されている。この検出マーク50はエンドレスインクリボン33の上下端の印字領域外に施されており、前記エンドレスインクリボン33が継ぎ目検出装置の検出端子61を通過した場合には印字動作を一時中断すると同時に、プラテン駆動用モータ37を駆動源としカム機構を用いてプラテン36を後退させハンマバンク31とプラテン36間の間隔を広げた上でインクリボン溶着部を印字せずに通過させる。   The endless ink ribbon 33 is constructed endlessly by welding both ends. Further, as shown in FIG. 1, the endless ink ribbon 33 has a conductive detection mark 50 for detecting the ink ribbon welded portion on the front side with respect to the traveling direction of the endless ink ribbon 33 (as shown in the positional relationship shown in FIG. 3). ). The detection mark 50 is provided outside the printing area at the upper and lower ends of the endless ink ribbon 33. When the endless ink ribbon 33 passes the detection terminal 61 of the joint detection device, the printing operation is temporarily interrupted and at the same time, the platen. The drive motor 37 is used as a drive source, the platen 36 is retracted by using a cam mechanism, the interval between the hammer bank 31 and the platen 36 is increased, and the ink ribbon welded portion is passed without printing.

また、図3に示すメビウスを有するエンドレスインクリボン33を用いる場合、表・裏面同一箇所に導電材よりなる検出マーク50を設けると検出マーク50自体の剥がれ、及び印字用紙へのインクの付着による汚れの可能性が高くなる。そこで、本発明においては、図1に示すように、印字動作を中断すると同時にプラテン駆動用モータ37を駆動源としカム機構を用いてプラテン36を後退させ、ハンマバンク31とプラテン37間の間隔を広げた上でインクリボン溶着部を印字せずに通過させることでエンドレスインクリボン33がハンマモジュール31とプラテン36の間を通過する時の抵抗を現状の50%以下に低下させることが可能となり、検出マーク50自体の摩擦抵抗による剥がれの耐力を向上させ、なおかつ印字用紙へのインクの付着による汚れの可能性を下げることができる。   In addition, when the endless ink ribbon 33 having Moebius shown in FIG. 3 is used, if the detection mark 50 made of a conductive material is provided at the same position on the front and back surfaces, the detection mark 50 itself is peeled off, and the stain is caused by the ink adhering to the printing paper. The possibility of is increased. Therefore, in the present invention, as shown in FIG. 1, the printing operation is interrupted, and at the same time the platen drive motor 37 is used as a drive source and the platen 36 is moved backward using the cam mechanism, so that the interval between the hammer bank 31 and the platen 37 is increased. It is possible to reduce the resistance when the endless ink ribbon 33 passes between the hammer module 31 and the platen 36 to 50% or less of the current by passing the ink ribbon welded portion without printing after spreading. The resistance to peeling due to the frictional resistance of the detection mark 50 itself can be improved, and the possibility of contamination due to the adhesion of ink to the printing paper can be reduced.

次に、継ぎ目検出装置が検出マーク50を検出した場合の動作を図2のフローにて説明する。始めに、印刷動作中に検出マーク50を検出した場合を説明する。S1にて検出マークの有無を判別し、S2にて印刷中かを判別する。もし、印刷中の場合は、S3にて図示しないハンマ駆動回路への印刷データの転送を中止し、S4にてシャトル機構の往復運動を停止させ、プラテン36を後退させる。また、S2にて印刷中では無い場合、印刷データの転送はないことからシャトル動作停止S4の動作に移る。本実施例では、往復運動によってエンドレスインクリボン33のインクが印刷用紙に付着することを防止するため往復運動を停止させたが、インクが付着しても特に支障がない場合には往復運動を停止させなくても良い。S5にて、プラテン36を後退させることで用紙にインクが付着しない間隔を確保することが可能となり、またエンドレスインクリボン33への摩擦負荷も最小限に留めることが可能となる。また、リボン速度を印刷動作のリボン速度より高速にしてリボンを搬送することにより、短時間でインクリボン溶着部(継ぎ目部分)がハンマバンクを通過することが可能となる。S6にてリボン速度を通常速度に戻して印刷動作を再開する。なお、時間Tの間はリボン速度を可能な限り高速にした方が、エンドレスインクリボン33の弛み防止を図り用紙へのインク付着を回避することがより可能であり尚且つ印刷の停止時間を短くすることで、印刷中止のロス時間を短くすることが可能となる。   Next, the operation when the joint detection device detects the detection mark 50 will be described with reference to the flowchart of FIG. First, a case where the detection mark 50 is detected during the printing operation will be described. In S1, the presence / absence of a detection mark is determined. In S2, it is determined whether printing is in progress. If printing is in progress, the transfer of print data to a hammer drive circuit (not shown) is stopped in S3, the reciprocating motion of the shuttle mechanism is stopped in S4, and the platen 36 is moved backward. On the other hand, when printing is not being performed in S2, the print data is not transferred, and the operation proceeds to the shuttle operation stop S4. In this embodiment, the reciprocating motion is stopped in order to prevent the ink of the endless ink ribbon 33 from adhering to the printing paper due to the reciprocating motion, but the reciprocating motion is stopped if there is no particular problem even if the ink adheres. You don't have to. In S5, by retracting the platen 36, it is possible to secure an interval at which ink does not adhere to the paper, and it is also possible to keep the frictional load on the endless ink ribbon 33 to a minimum. In addition, by transporting the ribbon with the ribbon speed higher than the ribbon speed of the printing operation, the ink ribbon welded portion (joint portion) can pass through the hammer bank in a short time. In S6, the ribbon speed is returned to the normal speed and the printing operation is resumed. It should be noted that during the time T, it is possible to prevent the endless ink ribbon 33 from slacking and to avoid ink adhesion to the paper, and to shorten the printing stop time by increasing the ribbon speed as much as possible. By doing so, it is possible to shorten the loss time of print cancellation.

本発明のドットラインプリンタの印字機構部の構成を示す概略断面図。FIG. 3 is a schematic cross-sectional view showing a configuration of a printing mechanism unit of the dot line printer of the present invention. 本発明のドットラインプリンタにおける継ぎ目検出方法の動作フロー図。The operation | movement flowchart of the joint detection method in the dot line printer of this invention. 従来の継ぎ目検出マーク配置の一例を示す図。The figure which shows an example of the conventional joint detection mark arrangement | positioning. 従来の継ぎ目検出マーク配置の拡大図。The enlarged view of the conventional joint detection mark arrangement | positioning. 従来のドットラインプリンタの印字機構部の構成を示す概略断面図。FIG. 6 is a schematic cross-sectional view showing a configuration of a printing mechanism unit of a conventional dot line printer. 従来の継ぎ目検出方法の一例を示す図。The figure which shows an example of the conventional seam detection method. 従来の継ぎ目検出方法の一例を示す図。The figure which shows an example of the conventional seam detection method. 従来の継ぎ目検出方法の一例を示す図。The figure which shows an example of the conventional seam detection method.

符号の説明Explanation of symbols

30は印字素子、31はハンマバンク、32は印字用紙、33はエンドレスインクリボン、34は紙送り機構部、35はリボンセパレータ、36はプラテン、37はプラテン駆動用モータ、38はプラテン開閉用カム、50は検出マーク、51は光学式透過センサ、52は光学式反射センサ、61は導電式検出端子である。
30 is a printing element, 31 is a hammer bank, 32 is printing paper, 33 is an endless ink ribbon, 34 is a paper feed mechanism, 35 is a ribbon separator, 36 is a platen, 37 is a platen drive motor, and 38 is a platen opening / closing cam. , 50 is a detection mark, 51 is an optical transmission sensor, 52 is an optical reflection sensor, and 61 is a conductive detection terminal.

Claims (2)

複数個の印字素子を搭載したハンマバンクと、該ハンマバンクを桁方向に往復運動させるための往復運動手段と、印字用紙を搬送する用紙搬送機構と、前記ハンマバンクの打撃力を受けるプラテンと、該プラテンを前後に動作させるプラテン開閉機構と、その両端が溶着にてつなぎ合わされたリボン溶着部を有するエンドレスインクリボンと、該エンドレスインクリボンを駆動するリボン機構部と、前記エンドレスインクリボンの進行方向に対して前記リボン溶着部よりも前方側に付した検出マークを検出する検出スイッチを有する検出装置と、前記エンドレスインクリボンのインクが用紙へ付着することを防ぐリボンセパレータとを有し、前記ハンマバンクの往復運動の過程で前記印字素子を駆動し、前記エンドレスインクリボンを介して印字素子を打撃することでインクを印字用紙に転写して印字を行うドットラインプリンタにおいて、
前記検出装置の検出スイッチが前記エンドレスインクリボンの検出マークを検出したときには前記ハンマバンクの往復移動を停止し、前記プラテン開閉機構により前記プラテンを後退させて前記ハンマバンクと前記プラテン間の間隔を広げ、前記検出マーク及びインクリボン溶着部が前記ハンマバンクと前記プラテンとの間を通過した後、印刷動作を再開することを特徴とするドットラインプリンタ。
A hammer bank mounted with a plurality of printing elements, a reciprocating means for reciprocating the hammer bank in the digit direction, a paper conveying mechanism for conveying printing paper, a platen for receiving the hammering force of the hammer bank, A platen opening / closing mechanism for moving the platen back and forth, an endless ink ribbon having a ribbon welded portion joined at both ends by welding , a ribbon mechanism for driving the endless ink ribbon, and a traveling direction of the endless ink ribbon wherein a detection device having a detection switch for detecting a detection mark attached to the front side of the ribbon welded portion, the ink of the endless ink ribbon and a ribbon separator to prevent from adhering to the paper with respect to the hammer driving the printing elements in the course of the bank of reciprocating through the endless ink ribbon In line Udo Tsu Trine printer transfer to print the ink on the printing paper by striking the shaped element,
When the detection switch of the detection device detects a detection mark on the endless ink ribbon, the hammer bank stops reciprocating, and the platen is moved back by the platen opening / closing mechanism, so that the interval between the hammer bank and the platen is reached. the spread apart, the detection mark and the ink after ribbon welded portion has passed between the platen and the hammer bank, the dot line printer, wherein the resume printing operation.
記検出装置が前記検出マークを検出し、印刷動作を再開させるまでの間は、前記エンドレスインクリボンの走行速度を通常の印刷動作時よりも高速で搬送させることを特徴とする請求項1記載のドットラインプリンタ。 Before Symbol detector detects the detection mark, until resuming the printing operation, according to claim 1, wherein the conveying the running speed of the endless ink ribbon at a higher speed than during normal printing operation Dot line printer.
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Citations (4)

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JPH0357051U (en) * 1989-10-12 1991-05-31
JPH11216939A (en) * 1998-02-05 1999-08-10 Nec Data Terminal Ltd Dot impact type printer
JP2000272181A (en) * 1999-03-23 2000-10-03 Matsushita Electric Ind Co Ltd Image printer
JP2003025702A (en) * 2001-07-19 2003-01-29 Hitachi Koki Co Ltd Printer

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JPS6453884A (en) * 1987-08-25 1989-03-01 Nec Corp Printer with detecting mechanism for joint seal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0357051U (en) * 1989-10-12 1991-05-31
JPH11216939A (en) * 1998-02-05 1999-08-10 Nec Data Terminal Ltd Dot impact type printer
JP2000272181A (en) * 1999-03-23 2000-10-03 Matsushita Electric Ind Co Ltd Image printer
JP2003025702A (en) * 2001-07-19 2003-01-29 Hitachi Koki Co Ltd Printer

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