JPS64231B2 - - Google Patents
Info
- Publication number
- JPS64231B2 JPS64231B2 JP55188170A JP18817080A JPS64231B2 JP S64231 B2 JPS64231 B2 JP S64231B2 JP 55188170 A JP55188170 A JP 55188170A JP 18817080 A JP18817080 A JP 18817080A JP S64231 B2 JPS64231 B2 JP S64231B2
- Authority
- JP
- Japan
- Prior art keywords
- drive shaft
- arrow
- rotates
- paper
- paper feed
- 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
Links
- 210000000078 claw Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Character Spaces And Line Spaces In Printers (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Facsimile Scanning Arrangements (AREA)
- Common Mechanisms (AREA)
Description
【発明の詳細な説明】
本発明は記録紙に所望の文字、記号等を印刷す
る小型プリンターの紙送り装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper feeding device for a small printer that prints desired characters, symbols, etc. on recording paper.
従来のこの種の装置について、第１図、第２
図、第３図を用いてその機構及び動作を説明す
る。第１図、第２図、第３図は小型プリンターに
おけるヘツド送り機構及び紙送り機構であり、第
１図、第２図は側面図、第３図は平面図である。
図において、１はラセン溝１−ａを有し、印刷す
る桁数に応じて任意量の回動をする駆動軸、２は
駆動軸１に固定された駆動歯車、３は駆動歯車２
と噛み合い可能で紙送り軸７のまわりを回動可能
な扇形レバー、５は扇形レバー３に植立された爪
軸４のまわりに回動可能な爪、６は紙送り軸７に
固定された爪車、８は扇形レバー上に設けられた
ばね掛けピン、９は駆動軸１と紙送り軸７を結ぶ
直線上に固定されたばね掛けピン、１０はばね、
１１は駆動軸１のラセン溝１−ａと係合するピン
１１−ａを有し、案内軸１２に沿つて往復可能な
印字ヘツド、１３は紙送り軸７に固定された紙送
りローラー、２２は爪５が爪車６と常に係合する
様に作用するねじりコイルばねである。 Regarding conventional devices of this type, Figures 1 and 2 show
The mechanism and operation will be explained using FIG. 1, 2, and 3 show a head feeding mechanism and a paper feeding mechanism in a small printer, and FIGS. 1 and 2 are side views, and FIG. 3 is a plan view.
In the figure, 1 is a drive shaft that has a helical groove 1-a and rotates an arbitrary amount depending on the number of digits to be printed, 2 is a drive gear fixed to the drive shaft 1, and 3 is a drive gear 2.
5 is a fan-shaped lever that can be engaged with the fan-shaped lever and can be rotated around the paper feed shaft 7; 5 is a claw that is set on the fan-shaped lever 3 and is rotatable around the claw shaft 4; and 6 is fixed to the paper feed shaft 7. a ratchet wheel; 8 is a spring-loaded pin provided on the fan-shaped lever; 9 is a spring-loaded pin fixed on a straight line connecting the drive shaft 1 and the paper feed shaft 7; 10 is a spring;
11 is a print head that has a pin 11-a that engages with the helical groove 1-a of the drive shaft 1 and is reciprocatable along the guide shaft 12; 13 is a paper feed roller fixed to the paper feed shaft 7; 22; is a torsion coil spring that acts so that the pawl 5 always engages with the ratchet wheel 6.
かかる構成による装置の動作は、印字状態にお
いて、駆動軸１は矢印Ａ方向に回転し、印字ヘツ
ド１１は駆動軸１のラセン溝１−ａの作用により
案内軸１２に沿つて矢印Ｅ方向へ移動しながら印
字を行ない、この間扇形レバー３は、第２図の様
な位置で、駆動歯車２により矢印Ｃ方向へ、ばね
１０の作用により矢印Ｄ方向へ揺振させられる。
所望の印字が終了すると駆動軸１は、回転方向を
矢印Ａ方向から矢印Ｂ方向へ反転し、印字ヘツド
１１は矢印Ｆ方向へ移動し始める。扇形レバー３
はばね１０の作用により駆動歯車２と噛み合い、
扇形レバー３は矢印Ｄ方向に回転し、第１図に２
点鎖線で示された状態になる間に爪５は爪車６を
所定量だけ矢印Ｄ方向に回転させ、紙送りローラ
ー１３は紙送り軸７と共に矢印Ｄ方向に回転し、
記録紙を所定量だけ送る。駆動軸１がさらに矢印
Ｂ方向へ回転すると、扇形レバー３は第１図の様
な位置で駆動歯車２によりＤ方向へ、ばね１０の
作用によりＣ方向へ揺振させられる。駆動軸１が
矢印Ｂ方向へ回転し、印字ヘツドが矢印Ｆ方向へ
移動し、待期位置まで戻ると、駆動軸１は矢印Ｂ
方向から矢印Ａ方向へ反転し、印字ヘツド１１は
矢印Ｅ方向へ移動し始め、印字領域に達すると印
字を開始する。扇形レバー３はばね１０の作用に
より駆動歯車２と噛み合い、矢印Ｃ方向に回転
し、第２図の様な位置で揺振している。かかる構
成及び動作をなす従来の小型プリンターの紙送り
装置は次の様な欠点を有する。往復回動における
両端で、ばね１０の作用により駆動歯車１の一歯
毎に駆動歯車１と扇形レバー３が衝突しながら揺
振を繰り返す為、第１に、駆動歯車１と扇形レバ
ー３の衝突音の繰り返しによる騒音が発生する。
第２に両端における揺振により往復回動を一方向
の定量回転に変換する際に爪と爪車の様にいわゆ
るあそびが大きく、部品点数の多い一方向クラツ
チを使用しなければならず、ばねクラツチ、ロー
ラークラツチの様ないわゆるあそびの小さい簡単
な一方向クラツチの使用が不可能である。また、
両方向に任意の回動を行なう駆動軸１と同軸上で
定量の両方向回転を得る事が不可能な為小型化が
困難である。 The operation of the apparatus with this configuration is such that in the printing state, the drive shaft 1 rotates in the direction of arrow A, and the print head 11 moves in the direction of arrow E along the guide shaft 12 by the action of the helical groove 1-a of the drive shaft 1. During this time, the fan-shaped lever 3 is swung in the direction of the arrow C by the drive gear 2 and in the direction of the arrow D by the action of the spring 10 at the position shown in FIG.
When the desired printing is completed, the drive shaft 1 reverses its rotational direction from the direction of arrow A to the direction of arrow B, and the print head 11 begins to move in the direction of arrow F. Fan-shaped lever 3
meshes with the drive gear 2 due to the action of the spring 10,
The fan-shaped lever 3 rotates in the direction of arrow D, and as shown in FIG.
While the state shown by the dotted chain line is reached, the pawl 5 rotates the ratchet wheel 6 by a predetermined amount in the direction of arrow D, and the paper feed roller 13 rotates in the direction of arrow D together with the paper feed shaft 7.
Feeds the recording paper by a predetermined amount. When the drive shaft 1 further rotates in the direction of arrow B, the fan-shaped lever 3 is swung in the direction D by the drive gear 2 and in the direction C by the action of the spring 10 at the position shown in FIG. When the drive shaft 1 rotates in the direction of arrow B and the print head moves in the direction of arrow F and returns to the waiting position, the drive shaft 1 rotates in the direction of arrow B.
The direction is reversed to the direction of arrow A, and the print head 11 starts moving in the direction of arrow E, and starts printing when it reaches the print area. The fan-shaped lever 3 is engaged with the driving gear 2 by the action of the spring 10, rotates in the direction of arrow C, and swings at the position shown in FIG. Conventional paper feeding devices for small printers having such a configuration and operation have the following drawbacks. At both ends of the reciprocating rotation, the drive gear 1 and the fan-shaped lever 3 repeatedly oscillate while colliding with each tooth of the drive gear 1 due to the action of the spring 10, so firstly, the drive gear 1 and the fan-shaped lever 3 collide. Noise is generated due to repeated sounds.
Second, when converting reciprocating rotation into fixed rotation in one direction by oscillation at both ends, a one-way clutch with a large play and a large number of parts, such as a pawl and ratchet wheel, must be used. It is impossible to use a simple one-way clutch with small play, such as a roller clutch. Also,
Since it is impossible to obtain a fixed amount of rotation in both directions on the same axis as the drive shaft 1 that rotates arbitrarily in both directions, miniaturization is difficult.
本発明にかかる欠点を除去したもので、その目
的は騒音の無い紙送り装置を供することである。 Having obviated the drawbacks of the present invention, the aim is to provide a noiseless paper feeding device.
本発明の他の目的は、小型化可能な紙送り装置
を供することである。 Another object of the present invention is to provide a paper feeding device that can be miniaturized.
本発明の更に他の目的は、往復回動を一方向の
定量回転に変換し紙送りする際、ばねクラツチの
様な簡単な一方向クラツチを使用可能な紙送り装
置を供することである。 Still another object of the present invention is to provide a paper feeding device that can use a simple one-way clutch such as a spring clutch to convert reciprocating rotation into fixed rotation in one direction and feed the paper.
本発明の特徴とする構成は、
(1) 記録紙に文字、記号等を印刷する小型プリン
ターにおいて、両方向に任意量の回動を行い印
字ヘツドを桁方向に移動させる駆動軸、該駆動
軸に回動自在に挿入された従動体、該従動体と
係合し、前記駆動軸に関して、互いにしまり方
向が反対になる様に駆動軸へ挿入されたコイル
内径が前記駆動軸外径よりわずかに小さい２個
のコイルばね、前記駆動軸に回動自在に挿入さ
れ前記コイルばねとそれぞれ係合する２個の爪
車、前記爪車を係止可能なストツパー、前記従
動体と一方向クラツチを介して係合する紙送り
ローラーから成ることを特徴とする小型プリン
ターの紙送り装置。 The features of the present invention are as follows: (1) In a small printer that prints characters, symbols, etc. on recording paper, a drive shaft that rotates an arbitrary amount in both directions to move the print head in the digit direction; A rotatably inserted driven body, engaged with the driven body, and inserted into the drive shaft so that the directions are opposite to each other with respect to the drive shaft.The inner diameter of the coil is slightly smaller than the outer diameter of the drive shaft. two coil springs, two ratchet wheels rotatably inserted into the drive shaft and engaged with the coil springs, a stopper capable of locking the ratchet wheels, and a one-way clutch connected to the driven body. A paper feed device for a small printer, characterized in that it consists of engaging paper feed rollers.
(2) 従動体が、両方向に任意量の回動を行う駆動
軸と同軸上で、紙送り量に対応する所定量の往
復回動を得ることを特徴とする特許請求の範囲
第１項記載の小型プリンターの紙送り装置であ
る。(2) The driven body is coaxial with a drive shaft that rotates an arbitrary amount in both directions, and obtains a predetermined amount of reciprocating rotation corresponding to the amount of paper feed. This is a paper feeding device for a small printer.
以下に本発明の具体例を第４図、第５図、第６
図を用いて説明する。第４図、第５図、第６図
は、従来例と同様、小型プリンターにおけるヘツ
ド送り機構及び紙送り機構である。 Specific examples of the present invention are shown below in Figures 4, 5, and 6.
This will be explained using figures. 4, 5, and 6 show a head feeding mechanism and a paper feeding mechanism in a small printer, similar to the conventional example.
図において、１はラセン溝１−ａを有し、印刷
する桁数に応じ任意量の回動をする駆動軸、１４
は駆動軸１に回動自在に挿入された従動歯車、１
５はコイル内径が駆動軸１の外径よりわずかに小
さく、第４図の様に駆動軸１に挿入された状態で
駆動軸１との間に締まり力が働く様なコイルばね
で、一端は従動歯車１４に係合し、他端は駆動軸
１に回転可能に取付けられた爪車１７の溝１７−
ａと係合しており、従動歯車１４の負荷に対し、
駆動軸１が矢印Ｊ方向に回転するとコイルが締
り、コイル内周と駆動軸１の外周の間の摩擦力が
増大し、駆動軸１の矢印Ｊ方向のトルクが従動歯
車１４に伝達されるが、駆動軸１が矢印Ｉ方向に
回転するとコイルが緩み、コイルと駆動軸１の間
の摩擦力が減少して、駆動軸１のトルクは従動歯
車１４に伝達されない様な方向で挿入されてお
り、また駆動軸１が矢印Ｊ方向に回転し、従動歯
車１４に矢印Ｊ方向のトルクが伝達されている
時、爪車１７を係止するとコイルが緩み、コイル
と駆動軸１の間の摩擦力が減少して、従動歯車１
４にはトルクが伝達されず停止する様になつてい
る。１６は一端が従動歯車１４と他端が駆動軸１
に回転可能に取付けられた爪車１８の溝１８−ａ
と係合し、コイルばね１５とは反対の作用をする
様、つまり駆動軸１が矢印Ｉ方向に回転し、爪車
１８が係止されない時だけ、従動歯車１４にトル
クを伝達する様な方向に駆動軸１に挿入されたコ
イルばね、２１は爪車１７，１８を係止可能な位
置に固定されたストツパーで、１９は従動歯車１
４と常時噛み合い紙送り軸７に回動自在に挿入さ
れた紙送り歯車、２０は矢印Ｌ方向のトルクを伝
達する様に紙送り軸７に挿入され、一端が紙送り
歯車１９と係合した、コイル内径が紙送り軸７の
外径よりわずかに小さいコイルバネ、１１は印字
ヘツド、１２は案内軸、１３は紙送りローラであ
る。 In the figure, 1 is a drive shaft that has a helical groove 1-a and rotates an arbitrary amount depending on the number of digits to be printed;
is a driven gear rotatably inserted into the drive shaft 1, 1
5 is a coil spring whose inner diameter is slightly smaller than the outer diameter of the drive shaft 1, and which exerts a tightening force between itself and the drive shaft 1 when inserted into the drive shaft 1 as shown in Fig. 4; A groove 17 of a pawl 17 is engaged with the driven gear 14 and the other end is rotatably attached to the drive shaft 1.
a, and against the load of the driven gear 14,
When the drive shaft 1 rotates in the direction of arrow J, the coil tightens, the frictional force between the inner circumference of the coil and the outer circumference of the drive shaft 1 increases, and the torque of the drive shaft 1 in the direction of arrow J is transmitted to the driven gear 14. When the drive shaft 1 rotates in the direction of arrow I, the coil is loosened, the frictional force between the coil and the drive shaft 1 is reduced, and the drive shaft 1 is inserted in such a direction that its torque is not transmitted to the driven gear 14. , when the drive shaft 1 rotates in the direction of arrow J and the torque in the direction of arrow J is transmitted to the driven gear 14, when the ratchet wheel 17 is locked, the coil loosens and the frictional force between the coil and the drive shaft 1 increases. decreases, driven gear 1
4, no torque is transmitted and the motor stops. 16 has a driven gear 14 at one end and a drive shaft 1 at the other end.
Groove 18-a of ratchet wheel 18 rotatably attached to
The direction is such that the drive shaft 1 rotates in the direction of arrow I and torque is transmitted to the driven gear 14 only when the ratchet wheel 18 is not locked. A coil spring 21 is inserted into the drive shaft 1, a stopper 21 is fixed at a position where the ratchet wheels 17 and 18 can be locked, and a stopper 19 is inserted into the driven gear 1.
A paper feed gear 20 is inserted into the paper feed shaft 7 so as to transmit torque in the direction of arrow L, and one end thereof is engaged with the paper feed gear 19. , a coil spring whose inner diameter is slightly smaller than the outer diameter of the paper feed shaft 7, 11 a print head, 12 a guide shaft, and 13 a paper feed roller.
かかる構成による装置の動作は、印字状態にお
いて、駆動軸１は矢印Ｉ方向に回転し、印字ヘツ
ド１１は駆動軸１のラセン溝１−ａの作用により
案内軸１２に沿つて矢印Ｇ方向へ移動しながら印
字を行ない、所望の印字が終了すると駆動軸１
は、回転方向を矢印Ｉ方向から矢印Ｊ方向へ反転
し、印字ヘツドは矢印Ｈ方向へ移動し始める。所
望の印字が終了した時点において、爪車１８はス
トツパー２１に係止されており、矢印Ｉ方向のト
ルクを従動歯車１４に伝達すべく駆動軸１に挿入
されたコイルばね１６は緩んでいる為、従動歯車
１４及び爪車１７，１８は停止している。駆動軸
１が反転して矢印Ｊ方方向に回転し始めると、駆
動軸１とコイルばね１５の間の摩擦力が増大し、
駆動軸１のトルクは従動歯車１４に伝達され、従
動歯車１４、爪車１７，１８は矢印Ｊ方向へ回転
する。回転角がθに達すると、爪車１７の爪１７
−ｂがストツパー２１に度当り係止され、コイル
ばね１５が緩み、駆動軸１とコイルばね１５の間
の摩擦力が減少して従動歯車１４、爪車１７，１
８は停止する。従動歯車１４が回転角θだけ矢印
Ｊ方向に回転する間、従動歯車１４と常時噛み合
つている紙送り歯車１９は矢印Ｌ方向に回転し、
コイルばね２０と紙送り軸７の間摩擦力の増大に
より、矢印Ｌ方向のトルクが伝達され紙送り軸７
及び紙送りローラー１３は矢印Ｌ方向に所定量だ
け回転して紙送りをする。駆動軸１が更に回転し
ても、爪車１７がストツパー２１に係止されてい
る為コイルばね１５は緩んでおり従動歯車１４、
爪車１７，１８は第５図の様な状態で停止してい
る。印字ヘツド１１が矢印Ｈ方向へ移動し、待期
位置まで戻ると、駆動軸１は矢印Ｊ方向から矢印
Ｌ方向へ反転し、印字ヘツド１１は矢印Ｇ方向へ
移動し始め、印字領域に達すると印字を開始す
る。駆動軸１が矢印Ｉ方向へ回転し始めると、駆
動軸１とコイルばね１６の間摩擦力が増大し、駆
動軸１のトルクは従動歯車１４に伝達され、従動
歯車１４、爪車１７，１８は矢印Ｉ方向にθだけ
回転し、爪車１８の爪１８−ｂがストツパー２１
に度当り、係止され、従動歯車１４、爪車１７，
１８は第６図の様な状態で停止する。この間、紙
送り歯車１９は所定量だけ矢印Ｋ方向に回転する
が、コイルばね２０が緩む為、紙送り軸７及び紙
送りローラー１３へのトルク伝達は行なわれな
い。更に駆動軸１が矢印Ｉ方向に回転し、印字ヘ
ツド１１が所望の印字を終了すると駆動軸１は再
び反転し、以上の様な一連の動作を繰り返す。
尚、コイルばね１５，１６，２０が緩む場合にも
わずかなトルク（緩みトルク）が発生するが、コ
イルばね１５，１６においてはストツパー２１と
爪車１７，１８の爪１７−ｂ，１８−ｂとの押付
け力となり、コイルばね２０については、そのト
ルクが紙送りローラ１３を動作させるに至らない
為、省略して説明した。 The operation of the apparatus with this configuration is such that in the printing state, the drive shaft 1 rotates in the direction of arrow I, and the print head 11 moves in the direction of arrow G along the guide shaft 12 by the action of the helical groove 1-a of the drive shaft 1. When the desired printing is completed, the drive shaft 1
, the direction of rotation is reversed from the direction of arrow I to the direction of arrow J, and the print head begins to move in the direction of arrow H. At the time when the desired printing is completed, the ratchet wheel 18 is locked to the stopper 21, and the coil spring 16 inserted into the drive shaft 1 to transmit torque in the direction of arrow I to the driven gear 14 is loosened. , the driven gear 14 and the ratchet wheels 17, 18 are at rest. When the drive shaft 1 reverses and starts rotating in the direction of arrow J, the frictional force between the drive shaft 1 and the coil spring 15 increases,
The torque of the drive shaft 1 is transmitted to the driven gear 14, and the driven gear 14 and ratchet wheels 17 and 18 rotate in the direction of arrow J. When the rotation angle reaches θ, the pawl 17 of the pawl wheel 17
-b is permanently locked to the stopper 21, the coil spring 15 is loosened, and the frictional force between the drive shaft 1 and the coil spring 15 is reduced, and the driven gear 14 and the ratchet wheels 17, 1
8 stops. While the driven gear 14 rotates by the rotation angle θ in the direction of the arrow J, the paper feed gear 19, which is constantly engaged with the driven gear 14, rotates in the direction of the arrow L.
Due to the increase in frictional force between the coil spring 20 and the paper feed shaft 7, torque in the direction of arrow L is transmitted to the paper feed shaft 7.
The paper feed roller 13 rotates by a predetermined amount in the direction of arrow L to feed the paper. Even if the drive shaft 1 rotates further, the coil spring 15 is loosened because the pawl 17 is locked to the stopper 21, and the driven gear 14,
The ratchet wheels 17 and 18 are stopped in the state shown in FIG. When the print head 11 moves in the direction of arrow H and returns to the waiting position, the drive shaft 1 reverses from the direction of arrow J to the direction of arrow L, and the print head 11 begins to move in the direction of arrow G, and when it reaches the printing area. Start printing. When the drive shaft 1 begins to rotate in the direction of arrow I, the frictional force between the drive shaft 1 and the coil spring 16 increases, and the torque of the drive shaft 1 is transmitted to the driven gear 14. rotates by θ in the direction of arrow I, and the pawl 18-b of the pawl wheel 18 moves to the stopper 21.
The driven gear 14, the ratchet wheel 17,
18 is stopped in a state as shown in FIG. During this time, the paper feed gear 19 rotates by a predetermined amount in the direction of arrow K, but since the coil spring 20 is loosened, no torque is transmitted to the paper feed shaft 7 and the paper feed roller 13. The drive shaft 1 further rotates in the direction of arrow I, and when the print head 11 completes the desired printing, the drive shaft 1 is reversed again and the series of operations described above are repeated.
A slight torque (loosening torque) is also generated when the coil springs 15, 16, 20 are loosened; Since the torque of the coil spring 20 does not reach the point of operating the paper feed roller 13, the explanation has been omitted.
以上の装置によれば、往復回転を行なう従動歯
車１４はその回動行程の両端で揺振せず停止して
いる為、衝突、騒音がなく次の動作にあそびの小
さいクラツチ等が使用可能で、また両方向に任意
量の回動を行なう駆動軸１から同軸上の従動歯車
１４に定量の復複回動を与え得る為、小型化可能
である。 According to the above-mentioned device, the driven gear 14, which performs reciprocating rotation, stops without shaking at both ends of its rotation stroke, so there is no collision or noise, and a clutch with small play can be used for the next operation. Further, since the drive shaft 1, which rotates an arbitrary amount in both directions, can give a fixed amount of back and forth rotation to the coaxial driven gear 14, it is possible to reduce the size.
更に、本発明によれば、衝突、騒音がなくあそ
びの小さいクラツチ等が使用可能で、小型化可能
な紙送り装置を供し得る。 Further, according to the present invention, it is possible to provide a paper feeding device that can be miniaturized and can use a clutch that does not cause collisions or noise and has small play.
第１図、第２図は従来の装置を説明する側面
図、第３図は従来の装置を説明する平面図、第４
図は本発明の具体例を説明する平面図、第５図、
第６図は本発明の具体例を説明する側面図であ
る。
１……駆動軸、２……駆動歯車、３……扇形レ
バー、４……爪軸、５……爪、６……爪車、７…
…紙送り軸、８，９……ばね掛けピン、１０……
ばね、１１……印字ヘツド、１２……案内軸、１
３……紙送りローラ、１４……従動歯車、１５，
１６……コイルばね、１７，１８……爪車、１９
……紙送り歯車、２０……コイルばね、２１……
ストツパー。
Figures 1 and 2 are side views illustrating a conventional device, Figure 3 is a plan view illustrating a conventional device, and Figure 4 is a side view illustrating a conventional device.
The figure is a plan view explaining a specific example of the present invention, FIG.
FIG. 6 is a side view illustrating a specific example of the present invention. 1... Drive shaft, 2... Drive gear, 3... Fan-shaped lever, 4... Pawl shaft, 5... Pawl, 6... Pawl wheel, 7...
...Paper feed shaft, 8, 9...Spring pin, 10...
Spring, 11... Print head, 12... Guide shaft, 1
3...paper feed roller, 14...driven gear, 15,
16... Coil spring, 17, 18... Ratchet wheel, 19
... Paper feed gear, 20 ... Coil spring, 21 ...
Stopper.
Claims (1)
ターにおいて、両方向に任意量の回動を行い印字
ヘツドを桁方向に移動させる駆動軸、該駆動軸に
回動自在に挿入された従動体、該従動体と係合
し、前記駆動軸に関して、互いにしまり方向が反
対になる様に駆動軸へ挿入されたコイル内径が前
記駆動軸外径よりわずかに小さい２個のコイルば
ね、前記駆動軸に回動自在に挿入された前記コイ
ルばねとそれぞれ係合する２個の爪車、前記爪車
を係止可能なストツパー、前記従動体と一方向ク
ラツチを介して係合する紙送りローラーから成る
ことを特徴とする小型プリンターの紙送り装置。 ２ 従動体が、両方向に任意量の回動を行う駆動
軸と同軸上で、紙送り量に対応する所定量の往復
回動を得ることを特徴とする特許請求の範囲第１
項記載の小型プリンターの紙送り装置。[Scope of Claims] 1. In a small printer that prints characters, symbols, etc. on recording paper, a drive shaft that rotates an arbitrary amount in both directions and moves the print head in the digit direction, and is rotatably inserted into the drive shaft. two coil springs that are engaged with the driven body and inserted into the drive shaft so that their tightening directions are opposite to each other with respect to the drive shaft, the coil inner diameter of which is slightly smaller than the drive shaft outer diameter; , two ratchet wheels that engage with the coil springs rotatably inserted into the drive shaft, a stopper that can lock the ratchet wheels, and a paper that engages with the driven body via a one-way clutch. A paper feeding device for a small printer characterized by consisting of a feeding roller. 2. Claim 1, characterized in that the driven body obtains a predetermined amount of reciprocating rotation corresponding to the amount of paper feed on the same axis as a drive shaft that rotates an arbitrary amount in both directions.
Paper feeding device for the small printer described in Section 1.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55188170A JPS57112261A (en) | 1980-12-30 | 1980-12-30 | Paper feeder for small printer |
| DE8181306128T DE3175007D1 (en) | 1980-12-27 | 1981-12-24 | Apparatus for transmitting and interrupting drive from a driving to a driven member |
| EP81306128A EP0055617B1 (en) | 1980-12-27 | 1981-12-24 | Apparatus for transmitting and interrupting drive from a driving to a driven member |
| US06/334,398 US4443125A (en) | 1980-12-27 | 1981-12-24 | Printer |
| HK115/89A HK11589A (en) | 1980-12-27 | 1989-02-09 | Apparatus for transmitting and interrupting drive from a driving to a driven member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55188170A JPS57112261A (en) | 1980-12-30 | 1980-12-30 | Paper feeder for small printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57112261A JPS57112261A (en) | 1982-07-13 |
| JPS64231B2 true JPS64231B2 (en) | 1989-01-05 |
Family
ID=16218973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55188170A Granted JPS57112261A (en) | 1980-12-27 | 1980-12-30 | Paper feeder for small printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57112261A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0368338U (en) * | 1989-11-09 | 1991-07-04 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264949A (en) * | 1991-05-20 | 1993-11-23 | Xerox Corporation | Scanning carriage drive and image timing |
| KR100419226B1 (en) * | 2002-05-13 | 2004-02-21 | 삼성전자주식회사 | apparatus for driving carrier and feed roller in an inkjet printer |
| CN103144446A (en) * | 2011-12-07 | 2013-06-12 | 扬欣打印设备（上海）有限公司 | Mini-type gear drive mechanism of temperature-sensitive printer |
-
1980
- 1980-12-30 JP JP55188170A patent/JPS57112261A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0368338U (en) * | 1989-11-09 | 1991-07-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57112261A (en) | 1982-07-13 |
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