JPS6157258B2 - - Google Patents

Info

Publication number
JPS6157258B2
JPS6157258B2 JP57170338A JP17033882A JPS6157258B2 JP S6157258 B2 JPS6157258 B2 JP S6157258B2 JP 57170338 A JP57170338 A JP 57170338A JP 17033882 A JP17033882 A JP 17033882A JP S6157258 B2 JPS6157258 B2 JP S6157258B2
Authority
JP
Japan
Prior art keywords
recording paper
recording sheet
back tension
recording
rolled
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.)
Expired
Application number
JP57170338A
Other languages
Japanese (ja)
Other versions
JPS5964459A (en
Inventor
Yasuhito Uchino
Yukitaka Totsuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Priority to JP57170338A priority Critical patent/JPS5964459A/en
Publication of JPS5964459A publication Critical patent/JPS5964459A/en
Publication of JPS6157258B2 publication Critical patent/JPS6157258B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/08—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on web roll being unwound
    • B65H23/085—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on web roll being unwound and controlling web tension

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Replacement Of Web Rolls (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Facsimiles In General (AREA)

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、ロール状記録シートをバツクテンシ
ヨンを付与した状態で引き出して送出する記録シ
ートの送り機構の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a recording sheet feeding mechanism for pulling out and feeding a rolled recording sheet with back tension applied thereto.

〔発明の技術的背景〕[Technical background of the invention]

例えば、フアクシミリ装置における記録装置の
ように、記録紙としてロール状記録紙を用いたも
のでは、記録紙の斜行を防止して安定に記録部に
供給するために、ロール状記録紙にバツクテンシ
ヨンを付与しながら送ることが行なわれている。
第１図および第２図はその従来における送り機構
の構成例を示すものである。第１図においてこの
送り機構は、記録紙受部１にロール状記録紙２を
収容してこの記録紙２の上部周面に圧縮ばね３に
より付勢した摩擦板４を押し付け、この摩擦板４
の押し付け力によりロール状記録紙２に絶えずバ
ツクテンシヨンを付与するようにしたものであ
る。このような構造では、バツクテンシヨンF0
は ＦO＝Ｐ・μ＝ｋ・δ・μ で表わされる。ただし、 Ｐ：ばねによる摩擦板の押し付け力 μ：摩擦板と記録紙との摩擦係数 δ：ばねの変位 ｋ：ばねの定数 である。 For example, in a recording device such as a facsimile machine that uses a roll of recording paper as the recording paper, the roll of recording paper must have a It is common practice to send the item while adding a color to it.
FIGS. 1 and 2 show an example of the structure of the conventional feeding mechanism. In FIG. 1, this feeding mechanism accommodates a roll of recording paper 2 in a recording paper receiver 1, presses a friction plate 4 biased by a compression spring 3 against the upper peripheral surface of this recording paper 2, and presses the friction plate 4 biased by a compression spring 3.
Back tension is constantly applied to the roll-shaped recording paper 2 by the pressing force. In such a structure, the back tension F 0
is expressed as F O =P・μ=k・δ・μ. However, P: Pressing force of the friction plate by the spring μ: Coefficient of friction between the friction plate and the recording paper δ: Displacement of the spring k: Constant of the spring.

したがつて、上記式から明らかなように、本機
構は、記録紙２の径が小さくなるに従つて圧縮ば
ね３の変位δが減少すると、摩擦板４による押し
付け力Ｐが減少するため、例えば第３図Ａに示す
如く記録紙２へのバツクテンシヨンが記録紙２の
径の減少に従つて低下する。 Therefore, as is clear from the above equation, in this mechanism, when the displacement δ of the compression spring 3 decreases as the diameter of the recording paper 2 becomes smaller, the pressing force P by the friction plate 4 decreases. As shown in FIG. 3A, the back tension on the recording paper 2 decreases as the diameter of the recording paper 2 decreases.

一方、第２図に示す機構は、記録紙受部５にロ
ール状記録紙２を収容し、この状態で引張ばね６
により付勢した摩擦板７を記録紙２の下部周面に
当接させることにより、記録紙２を上方へ押し上
げて上カバー８に当接させ、このときの摩擦板７
と記録紙２との摩擦力により記録紙２にバツクテ
ンシヨンを付与するようにしたものである。した
がつて、このような構造では、バツクテンシヨン
Ｆp′は、記録紙２の重量による記録紙２と摩擦板
７との摩擦力Ｗ・μに、摩擦板７による押し上げ
力P′と記録紙２の自重Ｗとの差（P′−Ｗ）の力で
カバー８に押圧させる為の摩擦力を加えたものと
なり、 Ｆp′＝Ｗ・μ＋（P′−Ｗ）μ＝P′・μ ＝k′・δ・μ と表わされる。なお、 μ：摩擦板と記録紙との摩擦係数 δ：ばねの変位 k′：ばね定数 であつて、記録紙２と記録紙受部５及び上カバー
８との摩擦係数はμより非常に小さいので０と仮
定する。第３図Ｂは、上記バツクテンシヨンＦ
O′と記録紙２との関係を示すものである。この関
係から明らかなように、この機構においても、バ
ツクテンシヨンＦO′は、記録紙２の径が減少する
に従つて小さくなり、その差は非常に大きなもの
となる。 On the other hand, the mechanism shown in FIG.
By bringing the friction plate 7, which is biased by
Back tension is applied to the recording paper 2 by the frictional force between the recording paper 2 and the recording paper 2. Therefore, in such a structure, the back tension F p ' is the frictional force W·μ between the recording paper 2 and the friction plate 7 due to the weight of the recording paper 2, the pushing up force P' by the friction plate 7, and the recording force P'. The difference between the paper 2's own weight W and the force (P'-W) is added to the frictional force to press the cover 8, and F p '=W・μ+(P′-W)μ=P′・It is expressed as μ = k′・δ・μ. In addition, μ: coefficient of friction between the friction plate and the recording paper δ: displacement of the spring k′: spring constant; the coefficient of friction between the recording paper 2, the recording paper receiver 5, and the upper cover 8 is much smaller than μ. Therefore, it is assumed to be 0. Figure 3B shows the above-mentioned back tension F.
This shows the relationship between O ' and the recording paper 2. As is clear from this relationship, also in this mechanism, the back tension F O ' decreases as the diameter of the recording paper 2 decreases, and the difference becomes very large.

〔背景技術の問題点〕[Problems with background technology]

このように、従来の各機構は、記録紙２の径が
減少するに従つてバツクテンシヨンが小さくな
り、かつその変化が大きいため、記録紙２の径が
小さいときにバツクテンシヨンが不足して記録紙
の斜行が生じ易かつた。また、上記バツクテンシ
ヨンの不足は、特に間欠副走査を行なう装置にあ
つて、送りむらやオーバラン等の原因となるた
め、非常に好ましくなかつた。一方、上記バツク
テンシヨンの不足を解消するためには、摩擦板の
押し付け力を増加すればよいが、このようにする
と、記録紙２の径が大きいときのバツクテンシヨ
ンが非常に大きなものとなるため、紙送り用のモ
ータの駆動力が増大してモータを大出力のものに
しなければならず、この結果装置の大形化や高価
格化を招いていた。 In this way, in each conventional mechanism, the back tension decreases as the diameter of the recording paper 2 decreases, and the change is large, so when the diameter of the recording paper 2 is small, the back tension becomes insufficient. Therefore, the recording paper was likely to be skewed. Furthermore, the lack of back tension is extremely undesirable, especially in devices that perform intermittent sub-scanning, because it causes uneven feeding and overrun. On the other hand, in order to solve the above-mentioned lack of back tension, it is possible to increase the pressing force of the friction plate, but if this is done, the back tension will become very large when the diameter of the recording paper 2 is large. Therefore, the driving force of the paper feeding motor increases, and the motor must have a large output, resulting in an increase in the size and price of the device.

〔発明の目的〕[Purpose of the invention]

本発明は、ロール状記録シートの径の大きさに
よらず略一定のバツクテンシヨンを付与し得るよ
うにし、記録シートを安定に送り得るとともに、
低駆動力の送り駆動源を使用可能として小形で安
価な記録装置を得られるようにした記録シートの
送り機構を提供することを目的とする。 The present invention makes it possible to apply a substantially constant back tension regardless of the diameter of a rolled recording sheet, and to stably feed the recording sheet.
It is an object of the present invention to provide a recording sheet feeding mechanism that enables the use of a feeding drive source with a low driving force, thereby making it possible to obtain a compact and inexpensive recording device.

〔発明の概要〕[Summary of the invention]

本発明は、上記目的を達成するために、摩擦部
材を固定的に設けるとともに、ロール状記録シー
トに対しその重量を差し引く方向に力を与える弾
性押圧機構を設け、この弾性押圧機構によりロー
ル状記録シートを上記摩擦板に押し付けるように
したものである。 In order to achieve the above object, the present invention provides a fixed friction member and an elastic pressing mechanism that applies a force to the rolled recording sheet in a direction that subtracts its weight, and uses this elastic pressing mechanism to record the rolled recording sheet. The sheet is pressed against the friction plate.

〔発明の実施例〕[Embodiments of the invention]

第４図ａ，ｂは本発明の一実施例における記録
紙送り機構を設けた記録装置の構成を示すもの
で、図中１０は筐体本体を示している。この筐体
本体１０の両側板の一端部上部には、互いに対を
なす枢着突部１１，１１が設けてあり、これらの
枢着突部１１，１１には軸１２により回動自在に
上蓋体１３が枢着されている。しかして、上蓋体
１３は、筐体本体１０に装着された状態（第４図
ａ）から第４図ｂに示す如く振り上げ可能とな
る。これらの筐体本体１０および上蓋体１３に
は、それぞれ互いに対をなすピンチローラ１４及
びキヤプスタンロール１５と、記録部としてのプ
ラテンローラ１６及び記録ヘツド１７とが設けて
ある。これらのピンチローラ１４とキヤプスタン
ローラ１５およびプラテンローラ１６と記録ヘツ
ド１７は、それぞれ前記上蓋体１３を筐体本体１
０に装着した状態において、所定の圧力で接触す
るように配設されている。 4a and 4b show the configuration of a recording apparatus provided with a recording paper feeding mechanism according to an embodiment of the present invention, and numeral 10 in the figure indicates a main body of the casing. A pair of pivoting protrusions 11, 11 are provided at the top of one end of both side plates of the housing body 10, and a top cover is rotatably attached to these pivoting protrusions 11, 11 by a shaft 12. A body 13 is pivotally mounted. As a result, the upper lid body 13 can be swung up from the state where it is attached to the housing body 10 (FIG. 4a) as shown in FIG. 4B. The housing main body 10 and the upper lid body 13 are provided with a pinch roller 14 and a capstan roll 15, which form a pair with each other, and a platen roller 16 and a recording head 17 as a recording section. These pinch rollers 14, capstan rollers 15, platen rollers 16, and recording heads 17 respectively connect the upper cover body 13 to the housing body 1.
0, so that they come into contact with each other with a predetermined pressure.

ところで、上蓋体１３の両側板間には、摩擦板
２０が固定されている。この摩擦板２０は、後述
するロール状記録紙の周面に接触することによ
り、同記録紙にバツクテンシヨンを付与するもの
である。また、この摩擦板２０は、上蓋体１３の
ねじり等を抑制するための補強材としても作用す
る。なお、図中１８は記録紙を前記記録部へ導び
くためのガイドローラである。 Incidentally, a friction plate 20 is fixed between both side plates of the upper lid body 13. The friction plate 20 applies back tension to a roll of recording paper, which will be described later, by coming into contact with the circumferential surface of the recording paper. Further, this friction plate 20 also acts as a reinforcing material for suppressing twisting of the upper lid body 13 and the like. Note that 18 in the figure is a guide roller for guiding the recording paper to the recording section.

一方筐体本体１０内には、記録紙受部３０が収
容されている。この記録紙受部３０は、両側板の
上端部に一対の係止凹部３１，３１を有してお
り、この係止凹部３１，３１にロール状記録紙２
のロール軸２ａを係止することによりロール状記
録紙２を回転自在に支持するものである。また、
この記録紙受部３０の一端部は、軸３２を介して
筐体本体１０の両側板に枢着されており、これに
より記録紙受部３０は軸３２を中心に回動可能と
なつている。さらに、記録紙受部３０の他端部と
前記枢着突部１１，１１との間には引張ばね３３
が架設されている。この引張ばね３３は、記録紙
受部３０ごとロール状記録紙２を引き上げてその
周面を前記摩擦板２０に押し付けるためのもので
ある。なお、図中３４は記録紙受部３０の引き上
げ位置の上限を規定するためのストツパである。 On the other hand, a recording paper receiving section 30 is housed within the main body 10 of the casing. This recording paper receiving section 30 has a pair of locking recesses 31, 31 at the upper ends of both side plates, and the rolled recording paper 2 is inserted into the locking recesses 31, 31.
By locking the roll shaft 2a, the roll-shaped recording paper 2 is rotatably supported. Also,
One end of the recording paper receiving section 30 is pivotally connected to both side plates of the housing body 10 via a shaft 32, so that the recording paper receiving section 30 can rotate around the shaft 32. . Further, a tension spring 33 is provided between the other end of the recording paper receiving portion 30 and the pivoting protrusions 11, 11.
has been erected. This tension spring 33 is for pulling up the roll-shaped recording paper 2 together with the recording paper receiving portion 30 and pressing its peripheral surface against the friction plate 20 . Note that 34 in the figure is a stopper for defining the upper limit of the lifting position of the recording paper receiving section 30.

また、筐体本体１０内底部の前記記録紙受部３
０の下方位置には、板ばね４０が設けてある。こ
の板ばね４０は、記録紙受部３０が下方に位置し
ている状態において記録紙受部３０に押し上げ力
を与え、これにより前記摩擦板２０に対するロー
ル状記録紙２の押し付け力を補正するものであ
る。 Further, the recording paper receiving portion 3 at the inner bottom of the housing body 10
A leaf spring 40 is provided at a position below 0. This leaf spring 40 applies a pushing force to the recording paper receiving section 30 when the recording paper receiving section 30 is positioned below, thereby correcting the pressing force of the rolled recording paper 2 against the friction plate 20. It is.

このような構成であるから、ロール状記録紙２
を記録紙受部３０にセツトし、上蓋体１３を装着
すると、ロール状記録紙２は記録紙受部ごと引張
ばね３３により上方に引き上げられて、周面が摩
擦板２０に押し付けられる。したがつて、この状
態で記録紙２をロール体から引き出すと、記録紙
２にはバツクテンシヨンが印加されることにな
る。 With such a configuration, the rolled recording paper 2
When the roll of recording paper 2 is set in the recording paper receiving section 30 and the top cover 13 is attached, the rolled recording paper 2 is pulled upward together with the recording paper receiving section by the tension spring 33, and its peripheral surface is pressed against the friction plate 20. Therefore, when the recording paper 2 is pulled out from the roll in this state, back tension is applied to the recording paper 2.

ここで、このバツクテンシヨンの大きさをＦN
とすると、このＦNは引張ばね３３のばね力から
記録紙保持部３０及びロール軸１２ａの重さを引
いた力をＦS、記録紙の自重をＷ、摩擦板の摩擦
係数をμとすると、 ＦN＝（ＦS−Ｗ）・μ で表わされる。さらに、記録紙２の自重Ｗは、記
録紙２の外径Ｄと記録紙の幅方向の比重Ｓとを用
いて表わすと Ｗ＝πＤ２／４・Ｓ となるから、この関係を用いて上記バツクテンシ
ヨンＦNを表わすと、 ＦN＝（ＦS−πＤ２／４・Ｓ）・μ となる。 Here, the magnitude of this back tension is F N
Then, F N is the spring force of the tension spring 33 minus the weight of the recording paper holder 30 and the roll shaft 12a, F S is the weight of the recording paper, W is the weight of the recording paper, and μ is the coefficient of friction of the friction plate. , F N =(F S −W)·μ. Furthermore, since the dead weight W of the recording paper 2 is expressed using the outer diameter D of the recording paper 2 and the specific gravity S in the width direction of the recording paper, it becomes W=πD 2 /4·S, so using this relationship, the above The back tension F N is expressed as F N =(F S −πD 2 /4·S)·μ.

この式から明らかなように、本実施例の機構に
より得られるバツクテンシヨンＦNは、引張ばね
３３のばね力ＦS（第５図）から記録紙２の自重
Ｗ（第５図）を差し引いたものとなり、第５図Ｅ
に示す如く記録紙２の径の大きさに関係なく略一
定となる。また本実施例のバツクテンシヨンＦN
を従来の機構におけるバツクテンシヨンＦOと比
べると、その差は Ｆ＝ＦN−ＦO＝（ＦS−πＤ２／４・Ｓ）μ−ＦS・μ ＝−π／４D2・Ｓ・μ＝−Ｗ・μ となり、本実施例のバツクテンシヨンＦNの方が
従来のバツクテンシヨンＦOよりもＷ・μだけ小
さいことになる。 As is clear from this equation, the back tension F N obtained by the mechanism of this embodiment is obtained by subtracting the dead weight W of the recording paper 2 (Fig. 5) from the spring force F S of the tension spring 33 (Fig. 5). Figure 5E
As shown in FIG. 2, it is approximately constant regardless of the diameter of the recording paper 2. Also, the back tension F N of this embodiment
When compared with the back tension F O in the conventional mechanism, the difference is F = F N - F O = (F S - πD 2 /4 S) μ - F S M = -π/4 D 2 S・μ=-W・μ, and the back tension F N of this embodiment is smaller than the conventional back tension F O by W・μ.

したがつて、記録紙２を送るためのモータの駆
動力は従来に比べ小さなものでよいことになり、
しかもそれにも拘らず十分大きなバツクテンシヨ
ンを印加することができるので、記録紙２を送り
むらやオーバラン等を生じることなく安定に記録
部へ供給することができる。 Therefore, the driving force of the motor for feeding the recording paper 2 only needs to be smaller than in the past.
Moreover, in spite of this, a sufficiently large back tension can be applied, so that the recording paper 2 can be stably fed to the recording section without uneven feeding or overrun.

また、本実施例では、バツクテンシヨン補正用
の板ばね４０になる押し上げ力ＦBが、例えば第
５図Ｇに示す如くロール状記録紙２の径が大きい
領域に限りロール状記録紙２に加わる。このた
め、バツクテンシヨンＦN′は ＦN′＝｛（ＦS＋ＦB）−Ｗ｝・μ ＝｛（ＦS＋ＦB）−πＤ２／４・Ｓ｝・μ となり、これを図示すると第５図Ｈのようにな
る。 Further, in this embodiment, the pushing force F B acting as the leaf spring 40 for back tension correction is applied to the rolled recording paper 2 only in the area where the diameter of the rolled recording paper 2 is large, as shown in FIG. 5G, for example. join. Therefore, the back tension F N ′ is F N ′={(F S +F B )−W}・μ = {(F S +F B )−πD 2 /4・S}・μ, which is illustrated as follows. The result will be as shown in Figure 5H.

この特性Ｈから明らかなように、板ばね４０に
よりロール状記録紙２の径が大きい領域のバツク
テンシヨンＦN′がさらに一定となり、この結果記
録紙２の送り安定性がより一層向上する。 As is clear from this characteristic H, the leaf spring 40 makes the back tension F N ' of the large diameter region of the roll of recording paper 2 more constant, and as a result, the feeding stability of the recording paper 2 is further improved.

このように本実施例の送り機構であれば、従来
のようにロール状記録紙２の重量が働く方向と同
方向に摩擦板への押し付け力を働かせるのではな
く、ロール状記録紙２の重量方向と反対方向に押
し付け力を働かせるようにしているので、バツク
テンシヨンはロール状記録紙２の径の変化によら
ず略一定になり、この結果バツクテンシヨンの最
大値と最小値との差を小さくできるので、モータ
の駆動力を低減し得て、モータの小形化および低
価格化をはかることが可能となる。また、駆動力
の小さなモータを用いたとしても、十分大きなバ
ツクテンシヨンを与えることができるので、記録
紙２を送りむらやオーバラン等を起こすことなく
安定に送ることができる。さらに、補正用の板ば
ね４０を使用したことにより、記録紙の送り安定
性を高めることができ、しかも記録紙受部を振動
や衝撃から保護することができる。 In this way, with the feeding mechanism of this embodiment, the pressing force is not exerted on the friction plate in the same direction as the weight of the rolled recording paper 2 as in the conventional case, but the weight of the rolled recording paper 2 is applied. Since the pressing force is applied in the opposite direction, the back tension remains approximately constant regardless of the change in the diameter of the roll recording paper 2, and as a result, the difference between the maximum and minimum back tension values is Since it is possible to reduce the driving force of the motor, it is possible to reduce the size and cost of the motor. Further, even if a motor with a small driving force is used, a sufficiently large back tension can be applied, so that the recording paper 2 can be stably fed without causing uneven feeding or overrun. Furthermore, by using the correction leaf spring 40, it is possible to improve the feeding stability of the recording paper, and furthermore, it is possible to protect the recording paper receiver from vibrations and shocks.

なお、引張ばね３３のばね常数によつては、第
５図a′で示すばね力になることがあり、この場合
ロール状記録紙２の径の小さい部分でE′の如く
バツクテンシヨンが大きくなる。このような場合
には板ばね４１を設け、ロール状記録紙２の径が
小さくなつたときに板ばね４１が記録紙受部３０
を押下げるG′の如きばね力を付与すれば、合成
されたバツクテンシヨンはH′に示す如く径にか
かわらず一定に近くすることができる。 Note that depending on the spring constant of the tension spring 33, the spring force shown in FIG. Become. In such a case, a leaf spring 41 is provided so that when the diameter of the rolled recording paper 2 becomes smaller, the leaf spring 41 moves toward the recording paper receiver 30.
By applying a spring force such as G' that pushes down, the resulting back tension can be made nearly constant regardless of the diameter, as shown by H'.

なお、本発明は上記実施例に限定されるもので
はない。例えば、引張ばねの他に記録紙受部３０
を上方に押し上げる圧縮ばねを用いてもよく、そ
の他ばねの種類や設置位置等については適宜選定
可能である。その他、ロール状記録紙の支持構造
や摩擦板の形状や構成などについても、本発明の
要旨を逸脱しない範囲で種々変形して実施でき
る。 Note that the present invention is not limited to the above embodiments. For example, in addition to the tension spring, the recording paper receiver 30
A compression spring that pushes up may be used, and other types of springs, installation positions, etc. can be selected as appropriate. In addition, the support structure for the rolled recording paper, the shape and structure of the friction plate, etc. can be modified in various ways without departing from the gist of the present invention.

〔発明の効果〕〔Effect of the invention〕

以上詳述したように本発明は、摩擦部材を固定
的に設けるとともに、ロール状記録シートに対し
その重量を差し引く方向に力を与える弾性機構を
設け、この弾性機構によりロール状記録シートを
摩擦板に押し付けるようにしたものである。 As described in detail above, the present invention provides a friction member fixedly and an elastic mechanism that applies a force to the roll-shaped recording sheet in a direction that subtracts its weight. It was designed to impose pressure on

したがつて本発明によれば、ロール状記録シー
トの径の大きさによらず略一定のバツクテンシヨ
ンを付与し得るようにし、記録シートを安定に送
り得るとともに、低駆動力の送り駆動源を使用可
能として小形で安価な記録装置を得ることができ
る記録シートの送り機構を提供することができ
る。 Therefore, according to the present invention, it is possible to apply a substantially constant back tension regardless of the diameter of the rolled recording sheet, to stably feed the recording sheet, and to use a feeding drive source with low driving force. It is possible to provide a recording sheet feeding mechanism that can be used to obtain a compact and inexpensive recording device.

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

第１図および第２図はそれぞれ従来における異
なる送り機構を用いた記録装置の構成を示す側断
面図、第３図は第１図および第２図に示した送り
機構の作用説明に用いるための特性図、第４図
ａ，ｂは本発明の一実施例における送り機構を用
いた記録装置の構成を示す側断面図、第５図は同
装置の作用説明に用いるための特性図である。 ２……ロール状記録紙、１０……筐体本体、１
１，１１……枢着突部、１２……軸、１３……上
蓋体、２０……摩擦板、３０……記録紙受部、３
１，３１……係止凹部、３２……軸、３３……引
張ばね、３４……ストツパ、４０……板ばね、４
１……板ばね。 1 and 2 are side sectional views showing the configuration of a recording device using different conventional feeding mechanisms, respectively, and FIG. Characteristic diagrams, FIGS. 4a and 4b are side sectional views showing the configuration of a recording apparatus using a feeding mechanism according to an embodiment of the present invention, and FIG. 5 is a characteristic diagram used to explain the operation of the apparatus. 2... Rolled recording paper, 10... Housing body, 1
DESCRIPTION OF SYMBOLS 1, 11... Pivot protrusion, 12... Shaft, 13... Upper lid body, 20... Friction plate, 30... Recording paper receiver, 3
1, 31... Locking recess, 32... Shaft, 33... Tension spring, 34... Stopper, 40... Leaf spring, 4
1... Leaf spring.

Claims (1)

【特許請求の範囲】 １ ロール状記録シートをバツクテンシヨンを付
与した状態で引き出して送出する記録シートの送
り機構において、固定的に設けられたバツクテン
シヨン付与用の摩擦部材と、前記ロール状記録シ
ートをその重量を差し引いた力で前記摩擦部材に
押し付ける弾性機構とを具備したことを特徴とす
る記録シートの送り機構。 ２ 弾性機構は、ロール状記録シートを常時摩擦
部材に押し付ける主弾性部材と、この主弾性部材
によるロール状記録シートの摩擦部材への押し付
け力を補正して押し付け力を一定に近づけるべく
ロール状記録シートに弾性力を付与する補正弾性
部材とからなるものであることを特徴とする特許
請求の範囲第１項記載の記録シートの送り機構。[Scope of Claims] 1. In a recording sheet feeding mechanism that pulls out and sends out a rolled recording sheet with back tension applied thereto, a friction member for applying back tension that is fixedly provided, and a A recording sheet feeding mechanism comprising: an elastic mechanism that presses the recording sheet against the friction member with a force that is less than the weight of the recording sheet. 2. The elastic mechanism includes a main elastic member that constantly presses the rolled recording sheet against the friction member, and a rolled recording sheet that corrects the pressing force of the rolled recording sheet against the friction member by this main elastic member so that the pressing force approaches a constant level. 2. The recording sheet feeding mechanism according to claim 1, further comprising a correction elastic member that applies elastic force to the sheet.
JP57170338A 1982-09-29 1982-09-29 Feed mechanism for recording sheet Granted JPS5964459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57170338A JPS5964459A (en) 1982-09-29 1982-09-29 Feed mechanism for recording sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57170338A JPS5964459A (en) 1982-09-29 1982-09-29 Feed mechanism for recording sheet

Publications (2)

Publication Number Publication Date
JPS5964459A JPS5964459A (en) 1984-04-12
JPS6157258B2 true JPS6157258B2 (en) 1986-12-05

Family

ID=15903072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57170338A Granted JPS5964459A (en) 1982-09-29 1982-09-29 Feed mechanism for recording sheet

Country Status (1)

Country Link
JP (1) JPS5964459A (en)

Also Published As

Publication number Publication date
JPS5964459A (en) 1984-04-12

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