JPS6279151A - Paper suction mechanism for printer - Google Patents

Abstract

PURPOSE:To aim at making improvements in printing quality of single slip paper and operation efficiency, by turning a platen and a roller in a reverse feed direction prior to paper suction, while making the single slip paper supplied to a preset position between both these members so as to be moved up and down, and correcting a positional slip in advance. CONSTITUTION:When single slip paper 1 is supplied to a preset position between a platen 3 and a roller 4 by manual operation, a stepping motor 5 temporarily rotates in the reverse direction to a normal paper feeding direction, making the platen 3 and the roller 4 rotate in arrows B' and C' direction respectively. With this constitution, the single slip paper 1 is jumped up in an arrow A' direction, and afterward it drops down in an arrow A direction with its own weight. When this up-and-down motion is repeated several times, the paper is corrected of its attitude and position so as to cause its forefront end face 1a to go along an outer circumferential surface of the platen 3, and when operation is over, the stepping motor 5 is restored to rotation of its regular direction, and the single slip paper 1 is held between the platen 3 and the roller 4 and conveyed toward the arrow A in a correct attitude.

Description

【発明の詳細な説明】 〔概要〕 本発明のプリンタの用紙吸入機構は、供給された単票用
紙がプラテンおよびローラの逆回転によって上下方向の
運動を行い、該運動を介して用紙の先頭部端面がプリセ
ット位置をキープした後に印刷部へ吸入されるような構
成になっている。Detailed Description of the Invention [Summary] The paper suction mechanism of the printer of the present invention causes the supplied cut paper to move in the vertical direction by reverse rotation of the platen and rollers, and through this movement, the leading edge of the paper The end face is configured to be sucked into the printing section after keeping the preset position.

このため印刷位置の位置ズレ現象は的確に回避される。Therefore, the phenomenon of misalignment of the printing position can be accurately avoided.

〔産業上の利用分野〕[Industrial application field]

本発明はプリンタに装備される用紙吸入機構の改良に係
り、特に単票用紙に対する印刷位置の位置ズレを解消し
たプリンタの用紙吸入機構に関する。The present invention relates to an improvement of a paper suction mechanism installed in a printer, and more particularly to a paper suction mechanism for a printer that eliminates misalignment of the printing position with respect to a cut sheet.

〔従来の技術〕[Conventional technology]

第２図は従来の用紙吸入機構を示す図であって、ｆａ）
は要部側断面図、ｆｂ）は要部斜視図である。FIG. 2 is a diagram showing a conventional paper suction mechanism.
fb) is a side sectional view of the main part, and fb) is a perspective view of the main part.

これらの図に示すように用紙吸入機構は、ブラテン３と
、これに摺接して回動するローラ４と、用１氏カイト２
とを具備している。As shown in these figures, the paper suction mechanism consists of a platen 3, a roller 4 that rotates in sliding contact with the platen 3, and a roller kite 2.
It is equipped with.

そして、用紙ガイド２を介して矢印Ａ方向から一゛ラテ
シ３とローラ・４との当接位置、いわゆる用）′氏のプ
リセ、７１−位置乙こ供給された単票用紙１は、乍−印
Ｂ方向へ回転駆動される当該プラテン３と、これに接触
して矢印Ｃ方向へ回動するローラ４とに挾持され、用紙
ガイド２に沿って矢印入方向へ１般送されて印刷部１５
へ送られる。つまり、プラテン３とローラ４の用紙１般
送方向の回転駆動によりｆｉｊ　Ｆ用紙１は印刷部１５
へ吸入される。Then, the cut sheet 1 is fed from the direction of arrow A through the paper guide 2 to the contact position between the latte 3 and the roller 4, the so-called preset position 71-. It is held between the platen 3 that is rotationally driven in the direction of mark B and the roller 4 that contacts this and rotates in the direction of arrow C, and is generally fed along the paper guide 2 in the direction of the arrow C, and is sent to the printing section 15.
sent to. That is, by rotationally driving the platen 3 and roller 4 in the paper 1 general feeding direction, the fij F paper 1 is transferred to the printing section 15.
is inhaled.

なおプラテン３は、ヘルド７、プーリ８を介して連結さ
れたモータ６によって駆動される。Note that the platen 3 is driven by a motor 6 connected via a heald 7 and a pulley 8.

〔発明か解決しようとする問題点〕[Problem that the invention attempts to solve]

しかしながら上記従来の用紙吸入機構の場合は、単票用
紙ｌの供給がオペレータのマニュアル操作Ｑこよって行
われるため、第２図（ｂｌに示すように単票用紙１の先
頭部端面１ａが必ずしもプラテン３の外周面と一致せず
、屡々位置ズレθを生じる。However, in the case of the above-mentioned conventional paper suction mechanism, since the supply of the cut paper l is performed by the operator's manual operation Q, the leading end surface 1a of the cut paper 1 is not necessarily aligned with the platen as shown in FIG. 2 (bl). 3 and often causes a positional deviation θ.

この状態のままで単票用紙１を印刷部１５へ送って印刷
を行うと、当然印刷位置は単票用紙１の正規の印刷位置
から逸脱してしまう。If the cut sheet 1 is sent to the printing section 15 and printed in this state, the printing position will naturally deviate from the normal printing position of the cut sheet 1.

本発明は以上のような点に鑑みてなされたもので、その
目的とするところは、印刷部１５へ搬送される単票用紙
１の位置ズレを用紙吸入前のプリセット位置において事
前に矯正する機能を備えた用紙吸入機構を提供するにあ
る。The present invention has been made in view of the above points, and its purpose is to provide a function for correcting the misalignment of the cut sheet 1 conveyed to the printing section 15 in advance at a preset position before the sheet is sucked in. To provide a paper suction mechanism with

〔問題点を解決するための手段〕[Means for solving problems]

本発明の用紙吸入機構は、実施例図面第１図に示すよう
に、吸入前の単票用紙１の先頭部端面１ａを揃えるため
極く短時間ではあるがプラテン３とローラ４とが単票用
紙１の吸入方向とは逆の方向へ回転するように構成され
ている。As shown in FIG. 1 of the embodiment drawings, the paper suction mechanism of the present invention has a platen 3 and a roller 4 that are connected to the paper cut sheet 1 for a very short time in order to align the front end surface 1a of the cut paper sheet 1 before suction. It is configured to rotate in a direction opposite to the suction direction of the paper 1.

〔作用〕[Effect]

このように構成されたものにおいては、単票用紙１がプ
リセット位置で矢印Ａ−Ａ’方向の小刻みな上下運動を
行う。つまりプラテン３とローラ４とによって矢印Ａ”
方向へ押し上げられた単票用紙ｌは自重によって矢印入
方向へ落下するので、結果的に上下動することになる。In the device configured in this way, the cut sheet 1 makes small vertical movements in the direction of the arrow AA' at the preset position. In other words, by platen 3 and roller 4, arrow A''
The cut sheet l pushed up in the direction falls in the direction indicated by the arrow due to its own weight, and as a result it moves up and down.

この上下動過程で当該用紙１の先頭部端面１ａの位置が
矯正され正しい姿勢で印刷部１５−・送られる。During this vertical movement process, the position of the leading edge surface 1a of the sheet 1 is corrected and the sheet 1 is fed to the printing section 15-- in a correct posture.

Ｌ実施例〕 以下図面に示した実施例に基づいて本発明の詳細な説明
する。L Embodiment] The present invention will be described in detail below based on the embodiment shown in the drawings.

第１図は本発明の一実施例を示す図であって、（ａｌは
要部側断面Ｍ、（ｂ）は要部斜視図である。FIG. 1 is a diagram showing an embodiment of the present invention, (al is a side cross section M of the main part, and (b) is a perspective view of the main part.

これらの図に示すように本発明の用紙吸入機構には、単
票用紙１を搬送するプラテン３を駆動するためのモータ
として、回転方向が自在に変化するステッピングモータ
１０が使用されている。As shown in these figures, the paper suction mechanism of the present invention uses a stepping motor 10 whose rotational direction can be freely changed as a motor for driving a platen 3 that conveys a cut sheet 1.

そしてプラテン３とローラ４間のプリセット位置にｉｉ
ｉ票用紙１がマニュアル操作にて供給された時、前記ス
テッピングモータＩＯは一時的に正規の用紙搬送方向と
は反対の方向へ回転しで、プラテン３とローラ４とをそ
れぞれ矢印Ｂ’、　Ｃ”方向へ回動させる。これによっ
て単票用紙１は、矢印へ゛方向へ跳ね上げられる。跳ね
上がった用紙１は、その後自重によって矢印入方向へ落
下する。この上下運動を数回繰り返すと、その過程で当
該用紙の先頭部端面１ａがプラテン３の外周面に沿うよ
うに姿勢と位置とを矯正される。and ii to the preset position between platen 3 and roller 4.
When the i-slip sheet 1 is fed manually, the stepping motor IO temporarily rotates in the opposite direction to the normal sheet conveyance direction and moves the platen 3 and roller 4 in the direction of arrows B' and C, respectively. This causes the cut sheet 1 to flip up in the direction of the arrow.The flipped sheet 1 then falls in the direction of the arrow due to its own weight.If you repeat this up and down movement several times, the process Then, the attitude and position of the paper are corrected so that the leading edge surface 1a of the paper is aligned with the outer peripheral surface of the platen 3.

このプリセット位置における単票用紙１の位置矯正操作
が終了すると、ステッピングモータ５は正規方向の回転
に戻り、単票用紙１はプラテン３およびローラ４に挟持
されて矢印Ａ方向へ搬送される。When the operation for correcting the position of the cut sheet 1 at this preset position is completed, the stepping motor 5 returns to normal rotation, and the cut sheet 1 is conveyed in the direction of arrow A while being held between the platen 3 and the rollers 4.

なお上記ステッピングモータ５を逆転させる時間、即ち
単票用紙１の位置矯正に要する時間は、単票用紙１の寸
法や紙質および供給量等によって若干変化するが概ね０
．５秒程度で良い。Note that the time required to reverse the stepping motor 5, that is, the time required to correct the position of the cut sheet 1, varies slightly depending on the dimensions, paper quality, supply amount, etc. of the cut sheet 1, but is approximately 0.
．． About 5 seconds is fine.

〔発明の効果〕〔Effect of the invention〕

本発明は以上説明したように、セットされた単票用紙の
位置決めと姿勢の矯正とが当該用紙の上下動によって簡
単に行えるため、単票用紙の印刷品質とオペレータの作
業効率とが著しく向上する。As explained above, according to the present invention, the positioning and posture correction of the set paper sheets can be easily performed by moving the paper up and down, so that the print quality of the cut paper sheets and the work efficiency of the operator are significantly improved. .

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

第１図（ａｌと（ｂ］は本発明の一実施例を示す要部側
断面図と要部斜視図、 第２図は従来の用紙吸入機構を示す要部側断面図と要部
斜視図である。 図中、１は単票用紙、１ａは先頭部端面、２は用紙ガイ
ド、３はプラテン、４はローラ、５はステッピングモー
タ、７はヘルド、８はプーリ、θは位置ズレをそれぞれ
示す。 （ｂ） シＦｊ会愕明の　−Ｔ】史とｆブリ図 ＠　１　図Figures 1 (al and b) are a side sectional view and a perspective view of a main part showing an embodiment of the present invention; Figure 2 is a side sectional view and a perspective view of a main part showing a conventional paper suction mechanism. In the figure, 1 is a cut sheet, 1a is the leading end surface, 2 is a paper guide, 3 is a platen, 4 is a roller, 5 is a stepping motor, 7 is a heald, 8 is a pulley, and θ is a positional deviation. (b) ShiFj-Kai Shocking -T] History and F Buri Diagram @ 1 Diagram

Claims (2)

【特許請求の範囲】[Claims] （１）供給された単票用紙（１）を用紙搬送用のプラテ
ン（３）とローラ（４）とにより印刷部（１５）へ吸入
する用紙吸入機構において、 前記プラテン（３）と、それに摺接するローラ（４）と
を用紙吸入前に用紙搬送方向とは逆方向に回転駆動し、
当該プラテン（３）とローラ（４）間のプリセット位置
に供給された前記単票用紙（１）を上下動させるように
したことを特徴とするプリンタの用紙吸入機構。(1) In the paper suction mechanism that sucks the supplied cut paper (1) into the printing section (15) by the platen (3) for paper transport and rollers (4), the platen (3) and the The contacting roller (4) is driven to rotate in the opposite direction to the paper conveyance direction before the paper is sucked,
A paper suction mechanism for a printer, characterized in that the cut paper (1) fed to a preset position between the platen (3) and the roller (4) is moved up and down. （２）前記用紙搬送用のプラテン（３）が、可逆回転す
るステッピングモータ（５）によつて駆動されることを
特徴とする特許請求の範囲第（１）項記載のプリンタの
用紙吸入機構。(2) A paper suction mechanism for a printer according to claim 1, wherein the platen (3) for transporting paper is driven by a stepping motor (5) that rotates reversibly.