JPH0966638A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the noise leaking out of an opening part. SOLUTION: On the inner surface of an outer case 1, portions 7, 8, 15, 16 and 17 slidingly contacting with recording paper S are provided and, at the same time, wide spaces A, B, C and b having the continuous paper S as their each one wall surface are provided between the above-mentioned portions so as to guide the noise developed at a record writing part 23 from the narrow slidingly contacting portions 7, 8, 15, 16 and 17 to the wide spaces A, B, C, and b in order to lower the pressure and frequency of the noise by means of buffer effect to lower the level of the noise leaking out of opening parts 3 and 12.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明はプリンタに関し、より詳
しくは、給紙口や排紙口からの騒音の漏れを抑える点に
特徴を有するプリンタに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer, and more particularly to a printer characterized by suppressing noise leaks from a paper feed port and a paper discharge port.

【０００２】[0002]

【従来の技術】印字ワイヤを記録紙に打接して印字す
る、いわゆるインパクト式のプリンタでは、記録書込み
時に生じる騒音を減らすために、これまで各種の手段が
構じられてきているが、記録紙の供給及び排出のために
必要な給紙口と排紙口からの騒音の漏れについては、こ
れまでに何らの対策も構じられてきていなかった。2. Description of the Related Art In a so-called impact type printer which prints by printing a printing wire on a recording paper, various means have been constructed in order to reduce noise generated during recording and writing. No measures have been taken so far for leakage of noise from the paper feed port and the paper discharge port required for supplying and discharging the paper.

【０００３】特開平７−１２５３５９号公報は、本出願
人がこの点に着目したもので、ここに開示したプリンタ
は、排紙口の縁部に記録紙を摺接させ、外装ケースの印
字ヘッド寄りの内部空間を記録紙により塞ぐことによっ
て、遮音効果を発揮させるようにしたものであるが、開
口部を単に紙で塞ぐというものであるため、より有効な
遮音を期待するにはさらに改善すべき余地が残されてい
た。Japanese Patent Application Laid-Open No. 7-125359 focuses on this point by the applicant of the present invention. In the printer disclosed herein, the recording paper is slidably contacted with the edge of the paper discharge port, and the print head of the outer case is used. Although the sound insulation effect is achieved by closing the inner space near the recording paper, the opening is simply closed with paper, so further improvement is expected in order to expect more effective sound insulation. There was some room left.

【０００４】[0004]

【発明が解決しようとする課題】本発明はこのような問
題に鑑みてなされたもので、その目的とするところは、
記録紙を利用してさらに優れた遮音効果を発揮させる新
たなプリンタを提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to:
An object of the present invention is to provide a new printer that uses recording paper to exert a further excellent sound insulation effect.

【０００５】[0005]

【課題を解決するための手段】すなわち、本発明はこの
ような課題を達成するためのプリンタとして、プラテン
及び記録書込み手段を包被する外装ケースの内面に、記
録紙搬送経路上の記録紙と摺接する少くとも２個所の摺
接部を間隔をおいて設けるとともに、これらの摺接部の
間に、記録紙を一方の壁面とする空間を形成するように
したものである。That is, according to the present invention, as a printer for achieving such a problem, a recording paper on a recording paper conveyance path is provided on the inner surface of an outer case enclosing a platen and a recording / writing means. At least two sliding contact portions that are in sliding contact are provided at intervals, and a space with the recording paper as one wall surface is formed between these sliding contact portions.

【０００６】[0006]

【実施例】そこで以下に本発明の実施例について説明す
る。図面は、連続紙を対象とするプリンタとして構成し
た本発明の一実施例を示したものである。EXAMPLES Examples of the present invention will be described below. The drawings show an embodiment of the present invention configured as a printer for continuous paper.

【０００７】図において符号１で示した外装カバーに
は、手前側に排紙口１２と給紙口３が上下に設けられ、
給紙口３から送り込んだ記録紙Ｓをプラテンローラ２１
の周面に沿わせて反転させ、この間に記録ヘッド２２に
よる記録書込み処理を施して排紙口１２より排出するよ
うに構成されている。In the exterior cover shown by reference numeral 1 in the drawing, a paper discharge port 12 and a paper feed port 3 are provided on the front side, and
The recording paper S fed from the paper feed port 3 is fed to the platen roller 21.
The recording head 22 is turned upside down along the peripheral surface of the sheet, and the recording and writing process is performed by the recording head 22 during this period and the sheet is discharged from the sheet discharge port 12.

【０００８】つぎに、本発明の特徴部分をなす記録紙Ｓ
の搬送経路とその周辺の機構について説明すると、外装
ケース１の前面は、内部に向けてほぼ水平に延びるシー
トガイド２によって、排紙口１２と給紙口３が上下に区
画形成されている。Next, the recording paper S which is a characteristic part of the present invention
The transport path and the mechanism around it will be described. On the front surface of the outer case 1, a sheet discharge port 12 and a sheet feed port 3 are vertically formed by a sheet guide 2 that extends substantially horizontally toward the inside.

【０００９】給紙口３から外装ケース１の内部に延びる
給紙経路は、シートガイド２と、これに平行にその下方
に折曲げ形成された遮音板６とによって区画されてい
て、ここにはプッシュトラクタ２０が配設され、また、
前板５から遮音板６に移る角部は、記録紙Ｓを案内する
案内隅部７として形成され、さらに、遮音板６の内端８
は、プッシュトラクタ２０からプラテンローラ２１の周
面へ供給される記録紙Ｓの下面に近接位置して騒音の通
過隘路を形成し、上記した案内隅部７と遮音板６の内端
８との間には、記録紙Ｓを一方の壁面とするバッファ空
間Ａが構成されている。The paper feed path extending from the paper feed opening 3 to the inside of the outer case 1 is defined by the sheet guide 2 and a sound insulating plate 6 which is formed in parallel with the sheet guide and bent downward therebelow. A push tractor 20 is provided, and
The corner portion that moves from the front plate 5 to the sound insulating plate 6 is formed as a guide corner portion 7 that guides the recording sheet S, and further, the inner end 8 of the sound insulating plate 6 is formed.
Is located near the lower surface of the recording paper S supplied from the push tractor 20 to the peripheral surface of the platen roller 21 to form a noise passage, and the guide corner 7 and the inner end 8 of the sound insulation plate 6 are connected to each other. A buffer space A having the recording paper S as one wall surface is formed therebetween.

【００１０】なお、図中符号１０は、記録紙Ｓをプッシ
ュトラクタ２０のもとへ導くべく、シートガイド３の下
面に突設した紙案内用のリブを示している。Reference numeral 10 in the drawing denotes a paper guiding rib that is provided on the lower surface of the sheet guide 3 so as to guide the recording paper S to the push tractor 20.

【００１１】これに対して、プラテンローラ２１から排
紙口１２に致る排紙経路には、プラテンローラ２１の周
面からの記録紙Ｓをエッジガイド１３に向けて案内する
断面逆Ｌ字形の案内プレート１４が、記録書込み部２３
の上部を覆うようにして設けられていて、その排出側の
端部は、記録紙Ｓと摺接する案内端縁１５をなし、ま
た、この案内端縁１５と記録紙Ｓとによって囲まれた案
内プレート１４の内部は、排出側の第１のバッファ空間
Ｂを形成している。On the other hand, in the paper discharge path extending from the platen roller 21 to the paper discharge port 12, the recording paper S from the peripheral surface of the platen roller 21 is guided to the edge guide 13 and has an inverted L-shaped cross section. The guide plate 14 has a recording / writing unit 23.
Is provided so as to cover the upper part of the recording sheet S, and the end portion on the discharge side forms a guide edge 15 that is in sliding contact with the recording sheet S, and a guide surrounded by the guide edge 15 and the recording sheet S. The inside of the plate 14 forms a first buffer space B on the discharge side.

【００１２】一方、上記したエッジガイド１３は、その
表面に接触した記録紙Ｓを外装カバー１の中間部内面に
設けた摺接部１６と、開口部端縁１７とに接触させる案
内部材として構成されており、この摺接部１６と上記し
た案内端縁１５によって囲まれた部分は排出側の第２の
バッファ空間Ｃを形成し、また、摺接部１６と開口部端
縁１７によって囲まれた部分は、排出側の第３のバッフ
ァ空間Ｄを構成している。On the other hand, the above-mentioned edge guide 13 is constructed as a guide member for bringing the recording paper S, which is in contact with the surface thereof, into contact with the sliding contact portion 16 provided on the inner surface of the intermediate portion of the outer cover 1 and the opening end edge 17. The portion surrounded by the sliding contact portion 16 and the guide end edge 15 forms the second buffer space C on the discharge side, and is surrounded by the sliding contact portion 16 and the opening end edge 17. The open portion constitutes the third buffer space D on the discharge side.

【００１３】このように構成されたプリンタに連続紙Ｓ
を送り込むと、連続紙Ｓは、前板５と遮音板６との境に
形成された案内隅部７に接触し、ついでエッジガイド２
下面の案内用のリブ１０に接触してプッシュトラクタ２
０のもとへ導びかれ、ここから、プラテンローラ２１の
周面に沿って半周した上、一対の排紙ローラ２５を通っ
て案内プレート１４の案内端縁１５に接触し、さらに、
エッジガイド１３に案内されて、外装ケース１の下面摺
接部１６に摺接しつつ開口端縁１７に接してケース１外
へ排出される。A continuous paper S is added to the printer constructed as described above.
When the continuous paper S is fed in, the continuous paper S comes into contact with the guide corner 7 formed at the boundary between the front plate 5 and the sound insulating plate 6, and then the edge guide 2
The push tractor 2 comes into contact with the guiding rib 10 on the lower surface.
0, from which it makes a half turn along the peripheral surface of the platen roller 21, passes through the pair of paper discharge rollers 25, and contacts the guide edge 15 of the guide plate 14, and further,
The sheet is guided by the edge guide 13 and slidably contacts the lower surface slidable contact portion 16 of the outer case 1, contacts the opening edge 17, and is discharged to the outside of the case 1.

【００１４】このため、記録書込み部２３で発生した高
い周波数の打接音は、プラテンローラ２１の周面を巡っ
て、一方は給紙経路を経て給紙口３へ漏出しようとする
が、この振動波は、はじめに、遮音板６の内端８と連続
紙Ｓとの間の隘路で絞り込まれて、遮音板６と連続紙Ｓ
により囲まれた広い給紙側のバッファ空間Ａ内に拡散し
つつ入り込み、この過程で大きく圧力を下げ、周波数を
低減して、ここから案内隅部７の隘路を経て外装ケース
１の外へと拡散しつつ漏出して、さらに過程で圧力及び
周波数を下げる。For this reason, the hitting sound of high frequency generated in the recording / writing section 23 goes around the peripheral surface of the platen roller 21, and one of them tries to leak to the sheet feeding port 3 through the sheet feeding path. The vibration waves are first narrowed down at a narrow path between the inner end 8 of the sound insulation plate 6 and the continuous paper S, and the sound insulation plate 6 and the continuous paper S are narrowed down.
It enters into the wide buffer space A on the paper feed side, surrounded by, while diffusing, and in this process, the pressure is greatly reduced and the frequency is reduced, and from there, through the bottleneck of the guide corner 7 to the outside of the outer case 1. It diffuses and leaks, and further reduces the pressure and frequency in the process.

【００１５】他方、排紙経路１８側へ流れ出た高い周波
数の振動波は、はじめに、一部が断面逆Ｌ字形の案内プ
レート１４内に入り込み、ここから連続紙Ｓと摺接する
案内端縁１５を絞り込まれて通過する過程で圧力を下
げ、ついで、第２の排紙側バッファ空間Ｃから外装ケー
ス１の内面摺接部１６へ、さらに、第２のバッファ空間
Ｃから開口部端縁１７を通る間に絞り込みと拡散作用を
受けて、圧力を低下させ、音量レベルを低下させた状態
で開口部から漏れ出す。On the other hand, the high-frequency vibration wave flowing out to the side of the paper discharge path 18 first enters a part of the guide plate 14 having an inverted L-shaped cross section, from which the guide edge 15 which makes sliding contact with the continuous paper S is inserted. The pressure is lowered in the process of being narrowed down and then passed, and then passes from the second paper discharge side buffer space C to the inner surface sliding contact portion 16 of the outer case 1, and further from the second buffer space C through the opening end edge 17. The pressure and the volume level are lowered due to the narrowing and diffusion action between them, and the liquid leaks from the opening with the volume level lowered.

【００１６】本発明に係る装置と特開平７−１２５３５
９号公報に開示した上記装置を用い、これらを同じ条件
もとで実験した結果、本発明に係る装置においては、さ
らに騒音を１ｄｂ程度軽減できることが明らかとなっ
た。このことは、高い周波数の音を、隘路を介して、一
方の壁面が記録紙Ｓよりなる広い空間内へ導くことによ
り、バッファ効果あるいはラビリンス効果が働くこと
と、記録紙Ｓによる振動吸収作用が働く結果によるもの
と考えられる。Apparatus according to the present invention and Japanese Patent Laid-Open No. 7-12535
As a result of conducting an experiment under the same conditions using the above-mentioned device disclosed in Japanese Patent Publication No. 9, it was revealed that the device according to the present invention can further reduce noise by about 1 db. This means that a high-frequency sound is guided through a bottleneck into a wide space in which one wall surface is made of the recording paper S, whereby a buffer effect or a labyrinth effect is exerted, and a vibration absorbing effect by the recording paper S is exerted. It is thought to be due to the result of working.

【００１７】なお、以上は、連続紙を対象とするプリン
タの例で本発明を説明したものであるが、単票紙を対象
とするプリンタにも本発明を適用し得ることは云うまで
もない。Although the present invention has been described above by taking an example of a printer for continuous paper, it goes without saying that the present invention can also be applied to a printer for single-cut paper. .

【００１８】[0018]

【発明の効果】以上述べたように本発明によれば、外装
ケースの内面に、記録搬送経路上の記録紙と摺接する摺
接部を少くとも２個所設けて、これらの間に連続紙を一
方の壁面とする広い空間を設けるようにしたもので、記
録書込みの際に生じた騒音を、狭い摺接部からこれに続
く広い空間へ通すことにより、記録書込みのための記録
紙を利用してその圧力と周波数を減少させ、騒音を効果
的に低下させつつこれを開口部から漏出させることがで
きる。As described above, according to the present invention, at least two sliding contact portions, which are in sliding contact with the recording paper on the recording conveyance path, are provided on the inner surface of the outer case, and the continuous paper is provided between them. A wide space to be used as one wall surface is provided.By passing the noise generated during recording and writing from the narrow sliding contact part to the wide space that follows it, the recording paper for recording and writing can be used. The pressure and frequency can be reduced to allow it to leak through the openings while effectively reducing noise.

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

【図１】本発明の一実施例をなすプリンタの内部構成を
示した図である。FIG. 1 is a diagram showing an internal configuration of a printer that is an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ 外装ケース ３ 給紙口 ６ 遮音 ７ 案内隅部 １４ 案内プレート １６ 摺接部 １７ 開口端縁 ２１ プラテンローラ ２２ 記録ヘッド Ａ、Ｂ、Ｃ、Ｄ バッファ空間 1 Outer Case 3 Paper Feed Port 6 Sound Insulation 7 Guide Corner 14 Guide Plate 16 Sliding Contact 17 Opening Edge 21 Platen Roller 22 Recording Heads A, B, C, D Buffer Space

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 プラテン及び記録書込み手段を包被する
外装ケースの内面に、記録紙搬送経路上の記録紙と摺接
する少くとも２個所の摺接部を間隔をおいて設けるとと
もに、該各摺接部の間に、記録紙を一方の壁面とする空
間を形成したことを特徴とするプリンタ。1. An inner surface of an outer case that encloses the platen and the recording / writing means is provided with at least two sliding contact portions which are in sliding contact with the recording paper on the recording paper transporting path at intervals, and each sliding contact portion. A printer characterized in that a space having a recording paper as one wall surface is formed between the contact portions.