JPH052825Y2 - - Google Patents
Info
- Publication number
- JPH052825Y2 JPH052825Y2 JP1985120006U JP12000685U JPH052825Y2 JP H052825 Y2 JPH052825 Y2 JP H052825Y2 JP 1985120006 U JP1985120006 U JP 1985120006U JP 12000685 U JP12000685 U JP 12000685U JP H052825 Y2 JPH052825 Y2 JP H052825Y2
- Authority
- JP
- Japan
- Prior art keywords
- recording paper
- recording
- optical sensor
- recording head
- coordinates
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 34
- 238000003708 edge detection Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007430 reference method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
Landscapes
- Recording Measured Values (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、記録計の記録紙検出装置に関し、特
に記録計の固定枠から見た記録紙側辺の座標を検
出する装置に関する。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a recording paper detection device for a recorder, and more particularly to a device for detecting the coordinates of the side of the recording paper as seen from a fixed frame of the recorder.
従来の技術
記録計の構造の一例を第１図ないし第３図に示
す。記録計固定枠１に架設されたドラム２の外周
面との接触を保ちながら記録紙３をＸ軸方向（第
１図）に送る。好ましくは、ドラム２を回転自在
とし、ドラム２の外周面の色を記録紙３と識別し
易いもの、例えば記録紙３が白色のときドラム２
外周面を黒色とする。固定枠１に固定された主滑
り軸４及び案内軸５へ記録ヘツド６を摺動自在に
架設する。駆動ホイール７が張糸１６を介して記
録ヘツド６を記録紙３の幅方向、即ちＹ軸方向
（第１図）に駆動し、入力信号に応じたＹ軸方向
位置で記録ヘツド６は記録紙３上に記録をする。2. Description of the Related Art An example of the structure of a recorder is shown in FIGS. 1 to 3. The recording paper 3 is fed in the X-axis direction (FIG. 1) while maintaining contact with the outer peripheral surface of the drum 2 mounted on the recorder fixing frame 1. Preferably, the drum 2 is rotatable and the color of the outer peripheral surface of the drum 2 is easily distinguishable from the recording paper 3. For example, when the recording paper 3 is white, the drum 2
The outer peripheral surface is black. A recording head 6 is slidably installed on a main sliding shaft 4 and a guide shaft 5 fixed to a fixed frame 1. The drive wheel 7 drives the recording head 6 in the width direction of the recording paper 3, that is, in the Y-axis direction (FIG. 1) via the tension thread 16, and the recording head 6 moves toward the recording paper at a position in the Y-axis direction according to the input signal. 3. Record above.
記録計内で記録ヘツド６が記録をする記録紙送
り方向（Ｘ軸方向）位置、即ち記録計の記録位置
Ｐは一定であり、図示例の場合、記録ヘツド６に
対向するドラム２の位置が記録計の記録位置Ｐで
ある。 The position in the recording paper feeding direction (X-axis direction) where the recording head 6 records within the recorder, that is, the recording position P of the recorder, is constant, and in the illustrated example, the position of the drum 2 facing the recording head 6 is constant. This is the recording position P of the recorder.
記録ヘツド６の前記「入力信号に応じたＹ軸方
向位置」として、従来は記録紙３の幅方向（Ｙ軸
方向）におけるドラム２と記録紙３との相対関係
は不変であると仮定し、駆動ホイール７のサーボ
機構８内に設けたポテンシヨメータ（図示せず）
等により固定枠１に対する記録ヘツド６の絶対位
置を用いていた。第２図の符号９は記録紙押えロ
ーラを示す。 Conventionally, the "position in the Y-axis direction according to the input signal" of the recording head 6 is based on the assumption that the relative relationship between the drum 2 and the recording paper 3 in the width direction (Y-axis direction) of the recording paper 3 remains unchanged. A potentiometer (not shown) provided in the servomechanism 8 of the drive wheel 7
etc., the absolute position of the recording head 6 with respect to the fixed frame 1 was used. Reference numeral 9 in FIG. 2 indicates a recording paper pressing roller.
上記絶対位置を用いる方式には、固定枠１と記
録ヘツド６とポテンシヨメータとの相対的位置関
係を厳密に定めなければならず初期調整が面倒で
あること、ドラム２上で記録紙がなんらかの理由
でずれるとそのずれが直ちに記録誤差となりしか
もその誤差の補正及び自動的除去が極めて困難で
あること、湿度変動その他の原因による記録紙幅
の伸縮に伴なう誤差が避けられないこと等の欠点
がある。 In the method using the absolute position described above, the relative positional relationship between the fixed frame 1, the recording head 6, and the potentiometer must be determined strictly, and the initial adjustment is troublesome. Disadvantages include that if there is a deviation for any reason, the deviation immediately becomes a recording error, and it is extremely difficult to correct or automatically remove that error, and that errors due to expansion and contraction of the recording paper width due to humidity fluctuations and other causes are unavoidable. There is.
これ等の欠点を解決するため、実開昭60−
64222号公報は、記録紙の基準エツジ検出用の光
学的検出センサを記録ヘツドに搭載し、その検出
センサの信号によつて示される記録紙の基準エツ
ジを記録ヘツド駆動機構の基準位置とする方式
（以下、記録紙エツジ基準方式という。）を開示し
た。この記録紙エツジ基準方式は、記録紙の多少
のセツトずれや蛇行による誤差を除き記録紙のゼ
ロ点とスパン点に対応した記録ができる等の利点
を有する。しかし、記録紙エツジ方式では、起
動・停止を頻繁に行なう記録ヘツド上に検出セン
サが搭載されるので検出センサが振動に曝され著
しい場合には断線のおそれも考えられる。また、
検出センサと記録紙は一定の近距離を保つ必要が
あり、その間隙から外乱光が入つた場合、検出セ
ンサ出力のノイズとなり著しい場合は検出不能と
なる。さらに、この方式において光センサ１１は
第５図の矢印Ｖの両方向に可動であり、記録ヘツ
ド６の変位Ｙに対する光センサ１１の出力Ｓは第
５図の様になり、光センサ１１が記録紙３のエツ
ジ（第４図の右側辺１３ｂ参照）対向位置にある
ときのその出力Ｓは連続的変化の過程にあり、エ
ツジの検出が不安定となる欠点がある。しかも、
検出センサの特性のばらつきによる記録誤差を避
けるためには複雑な初期調整が必要である等の欠
点がある。 In order to solve these shortcomings,
Publication No. 64222 discloses a method in which an optical detection sensor for detecting the reference edge of the recording paper is mounted on the recording head, and the reference edge of the recording paper indicated by the signal from the detection sensor is used as the reference position of the recording head drive mechanism. (hereinafter referred to as the recording paper edge standard method). This recording paper edge reference method has the advantage of being able to perform recording corresponding to the zero point and span point of the recording paper, while eliminating errors caused by slight misalignment or meandering of the recording paper. However, in the recording paper edge method, since the detection sensor is mounted on the recording head which is frequently started and stopped, the detection sensor is exposed to vibrations, and if severe, there is a risk of wire breakage. Also,
It is necessary to maintain a certain short distance between the detection sensor and the recording paper, and if disturbance light enters through the gap, it will cause noise in the output of the detection sensor, and if it is significant, it will become impossible to detect. Further, in this method, the optical sensor 11 is movable in both directions of the arrow V in FIG. 5, and the output S of the optical sensor 11 with respect to the displacement Y of the recording head 6 is as shown in FIG. 3 (see right side 13b in FIG. 4), its output S is in the process of continuous change, which has the disadvantage that edge detection becomes unstable. Moreover,
There are drawbacks such as the need for complicated initial adjustments in order to avoid recording errors due to variations in the characteristics of the detection sensor.
考案が解決しようとする問題点
従つて、本考案が解決しようとする問題点は、
記録紙に関する記録ヘツドの相対的位置を決定す
る装置における精度及び信頼度の向上にある。Problems to be solved by this invention Therefore, the problems to be solved by this invention are as follows.
The objective is to improve the accuracy and reliability of a device for determining the relative position of a recording head with respect to a recording sheet.
問題点を解決するための手段
第１図ないし第３図を参照するに、本考案によ
れば、記録計固定枠１の記録位置Ｐに対向する部
位に記録紙３の側辺部分１３ａ（第４図）からの
反射光を検出する様に光センサ１１を取付け、記
録ヘツド６の移動に応じ記録位置Ｐと光センサ１
１との間に進入できる様に遮蔽部１２を記録ヘツ
ド６に固定する。さらに、前記遮蔽部１２が光セ
ンサ１１に向う前記記録紙表面からの反射光Ｂを
すべて遮断する時の前記遮蔽部１２の位置座標を
前記固定枠１から見た前記記録紙側辺１３ａの座
標Ｌ（第４図）として検出する座標検出器１０を
設ける。Means for Solving the Problems Referring to FIGS. 1 to 3, according to the present invention, the side portion 13a of the recording paper 3 (the The optical sensor 11 is attached to detect the reflected light from the recording head 6 (Fig. 4), and the recording position P and the optical sensor 1 are adjusted according to the movement of the recording head 6.
The shielding part 12 is fixed to the recording head 6 so that it can enter between the recording head 1 and the recording head 1. Furthermore, the positional coordinates of the shielding part 12 when the shielding part 12 blocks all the reflected light B from the surface of the recording paper directed toward the optical sensor 11 are the coordinates of the recording paper side 13a when viewed from the fixed frame 1. A coordinate detector 10 is provided to detect as L (FIG. 4).
遮蔽部１２は、図示例のように不透明な板とす
ることができるが、本発明における遮蔽部１２は
不透明板に限定されるものではない。 Although the shielding part 12 can be an opaque plate as shown in the illustrated example, the shielding part 12 in the present invention is not limited to an opaque plate.
座標検出器１０は、光学式のエンコーダ、アナ
ログ式ポテンシヨメータ、角度エンコーダ、その
他の任意の公知の適当な検出器により構成するこ
とができる。 The coordinate detector 10 may be an optical encoder, an analog potentiometer, an angle encoder, or any other known suitable detector.
本考案による記録紙側辺の検出は、記録紙の片
側だけでなく、記録位置Ｐにおけるその両側の側
辺１３ａ，１３ｂに対向する部位の固定枠１上に
光センサ１１を夫々取付けることにより、両側辺
１３ａ，１３ｂを検出することも可能である。 The side edges of the recording paper according to the present invention can be detected by mounting the optical sensors 11 not only on one side of the recording paper, but also on the fixed frame 1 at positions facing the sides 13a and 13b on both sides at the recording position P. It is also possible to detect both sides 13a and 13b.
本考案の好ましい実施例は記録紙３の側辺１３
ａ及び／又は１３ｂを検出するものであるが、適
当な色分け等を用い第４図に示されるゼロ点座標
Ｚ及び／又はスパン点座標Ｓを直接に検出する様
に修正することも可能である。 A preferred embodiment of the present invention is a side 13 of the recording paper 3.
a and/or 13b, but it is also possible to modify it to directly detect the zero point coordinate Z and/or span point coordinate S shown in FIG. 4 by using appropriate color coding etc. .
作 用
本考案による記録紙３の右側辺１３ｂの検出例
を第６図に示す。遮蔽部１２が矢印Ｖで示される
様にドラム２の仮想点Ａ，Ｂ，Ｃ，Ｄと対向する
位置へ順次Ｙ方向に移動するとき、本考案の固定
光センサ１１の出力Ｓは第６図の折線ａ→ｂ→ｃ
→ｄの様になる。図中、横軸Ｙはドラム軸上の位
置を示し、縦軸Ｓは光センサ１１の出力を示す。
まず、遮蔽部１２がなかつたとすると、光センサ
１１の出力Ｓはドラム２上における記録紙側辺部
１３ｂの位置に応じて変化するが、光センサ１１
への入力の大部分が記録紙３の表面からの反射光
であるため、ドラム２上の側辺部１３ｂの位置の
相違による出力Ｓの変化は例えば第６図の一点鎖
線ｍに示すように僅かである。したがつて、この
線ｍによつて記録紙３の側辺部１３ｂの位置を検
出するのは困難である。Operation An example of detection of the right side 13b of the recording paper 3 according to the present invention is shown in FIG. When the shielding part 12 sequentially moves in the Y direction to a position facing the virtual points A, B, C, and D of the drum 2 as shown by the arrow V, the output S of the fixed optical sensor 11 of the present invention is as shown in FIG. Broken line a→b→c
→It becomes like d. In the figure, the horizontal axis Y indicates the position on the drum axis, and the vertical axis S indicates the output of the optical sensor 11.
First, if there is no shielding part 12, the output S of the optical sensor 11 changes depending on the position of the recording paper side part 13b on the drum 2.
Since most of the input to the recording paper 3 is reflected light from the surface of the recording paper 3, the change in the output S due to the difference in the position of the side portion 13b on the drum 2 is, for example, as shown by the dashed line m in FIG. Very little. Therefore, it is difficult to detect the position of the side portion 13b of the recording paper 3 using this line m.
次に記録紙３の側辺部１３ｂがドラム３の表面
上の仮想点Ｃに対向する位置にあつたとする。遮
蔽部１２が光センサ１１から遠く離れているとき
の光センサ１１の出力Ｓは、遮蔽部１２の位置と
無関係に一定であり、第６図の実線カーブのａ−
ｂ部分はこの一定出力を示す。遮蔽部１２が例え
ば第６図の仮想点Ｂを超えて光センサ１１に近づ
くと、記録紙３から光センサ１１へ向う記録紙３
からの反射光が遮蔽部１２の位置に応じて部分的
に遮断され減少する。第６図の実線カーブ中のｂ
−ｃ部分は、この入射光減少に対応する光センサ
１１の出力Ｓの減少を示す。 Next, assume that the side portion 13b of the recording paper 3 is located at a position opposite to the virtual point C on the surface of the drum 3. The output S of the optical sensor 11 when the shielding part 12 is far away from the optical sensor 11 is constant regardless of the position of the shielding part 12, and the output S of the solid line curve a- in FIG.
Part b shows this constant output. When the shielding part 12 approaches the optical sensor 11 beyond, for example, virtual point B in FIG.
According to the position of the shielding part 12, the reflected light from the shielding part 12 is partially blocked and reduced. b in the solid curve in Figure 6
A portion -c shows a decrease in the output S of the optical sensor 11 corresponding to this decrease in incident light.
遮蔽部１２が記録紙３から光センサ１１へ向う
反射光をすべて遮断する位置、例えば第６図の仮
想点Ｃに対向する位置に達すると、光センサ１１
への入射光は遮蔽部１２及びドラム２からの反射
光のみとなるが、遮蔽部１２及びドラム２を黒色
とすれば、光センサ１１への入力が背景ノイズの
みでその出力Ｓは最低レベルとなる。その後遮蔽
部１２が第６図で右方向、即ち仮想点Ｄの方向へ
移動しても記録紙３の出力Ｓは最低レベルに留
る。第６図の実線カーブのｃ−ｄ部分はこの最低
レベル出力を示す。 When the shielding section 12 reaches a position where it blocks all reflected light from the recording paper 3 toward the optical sensor 11, for example, a position opposite to the virtual point C in FIG.
The incident light is only the reflected light from the shielding part 12 and the drum 2, but if the shielding part 12 and the drum 2 are black, the input to the optical sensor 11 is only background noise, and its output S is at the lowest level. Become. Thereafter, even if the shielding part 12 moves to the right in FIG. 6, that is, in the direction of the virtual point D, the output S of the recording paper 3 remains at the lowest level. The c-d portion of the solid curve in FIG. 6 indicates this lowest level output.
こうして、遮蔽部１２が記録紙３から光センサ
１１へ向う反射光をすべて遮断する位置に達した
時には、光センサ１１の出力Ｓに例えば第６図の
実線カーブ上の点ｃに示される様に最低レベルへ
曲る急変点が生ずる。この急変点ｃは、実質上遮
蔽部１２が記録紙３の側辺部１３ｂと対向する位
置に達したことを意味するので、この急変点ｃに
達した時の遮蔽部１２の座標を記録紙３の側辺部
１３ｂの位置座標として使うことができる。 In this way, when the shielding part 12 reaches the position where it blocks all the reflected light from the recording paper 3 toward the optical sensor 11, the output S of the optical sensor 11 will be as shown, for example, at point c on the solid line curve in FIG. A sharp turning point occurs where it bends to the lowest level. This sudden change point c means that the shielding part 12 has substantially reached the position facing the side part 13b of the recording paper 3, so the coordinates of the shielding part 12 when reaching this sudden change point c are It can be used as the position coordinates of the side portion 13b of No. 3.
即ち、この場合、第６図の明確な変曲点ｃが記
録紙３の右側辺１３ｂに対応する。従つて、記録
紙右側辺１３ｂの検出は、光センサ１１の出力Ｓ
の変曲点ｃの検出として容易に実現出来る。 That is, in this case, the clear inflection point c in FIG. 6 corresponds to the right side 13b of the recording paper 3. Therefore, the detection of the right side 13b of the recording paper is based on the output S of the optical sensor 11.
This can be easily realized as detection of the inflection point c.
また、光センサ１１には強い指向性は必要な
く、記録紙３からの距離も大きくとれるのでそこ
に外乱光を遮蔽するフード等を付けることにより
外乱光によるノイズを低減させることができる。 Further, since the optical sensor 11 does not need strong directivity and can be distanced from the recording paper 3 at a large distance, noise caused by external disturbance light can be reduced by attaching a hood or the like thereto to block external disturbance light.
記録紙３が幅方向（Ｙ軸方向）にずれた場合に
ついて、入力信号Ｉ（図示せず）に応じたＹ軸上
の座標ｙの位置における記録動作を第４図により
説明する。 In the case where the recording paper 3 is shifted in the width direction (Y-axis direction), the recording operation at the position of the coordinate y on the Y-axis according to the input signal I (not shown) will be explained with reference to FIG.
測定開始時刻ｔ＝０における左側辺１３ａの座
標をL0、右側辺１３ｂの座標をR0、ゼロ点座標
をZ0、スパン点座標をS0とすれば、任意の時刻ｔ
におけるゼロ点座標Ｚ及びスパン点座標Ｓはその
時刻において測定される両側辺の座標Ｌ及びＲの
関数として次の様に表せる。 If the coordinates of the left side 13a at measurement start time t=0 are L 0 , the coordinates of the right side 13b are R 0 , the zero point coordinates are Z 0 , and the span point coordinates are S 0 , then at any time t
The zero point coordinate Z and the span point coordinate S can be expressed as a function of the coordinates L and R of both sides measured at that time as follows.
Ｚ＝Ｒ−Ｌ／R0−L0Z0 (1)
Ｓ＝Ｒ−Ｌ／R0−L0S0 (2)
比例定数をＫとすれば、入力信号Ｉに対応する
座標ｙは次式で与えられる。 Z=R-L/R 0 -L 0 Z 0 (1) S=R-L/R 0 -L 0 S 0 (2) If the proportionality constant is K, the coordinate y corresponding to the input signal I is as follows. It is given by Eq.
ｙ＝Ｋ（Ｓ−Ｚ）Ｉ＋Ｚ (3)
(3)式の座標の原点は、光センサ１１及び座標検
出器１０により検出される記録時における記録紙
３の左側辺１３ａの座標Ｌである。従つて、上記
(1)，(2)及び(3)式により定められる座標ｙはたとえ
記録紙３がドラム２上でずれても又は湿度変化等
のため記録紙３が伸縮しても常にゼロ点とスパン
点との間に目盛に合つたものとなる。 y=K(S-Z)I+Z (3) The origin of the coordinates in equation (3) is the coordinate L of the left side 13a of the recording paper 3 during recording, which is detected by the optical sensor 11 and the coordinate detector 10. Therefore, the above
The coordinate y determined by equations (1), (2), and (3) is always the zero point and span point even if the recording paper 3 shifts on the drum 2 or even if the recording paper 3 expands or contracts due to changes in humidity, etc. It will fit the scale between .
本考案は側辺１３ａ及び１３ｂの座標Ｌ及びＲ
の検出装置を提供するものであるが、これらの座
標が与えられた後のマイクロコンピユータ等によ
る上記(1)，(2)及び(3)式の演算処理手段は当業者に
は明らかである。 The present invention is based on the coordinates L and R of the sides 13a and 13b.
However, it is clear to those skilled in the art how to process the above equations (1), (2), and (3) using a microcomputer or the like after these coordinates are given.
実施例
以上の説明において、記録紙３はドラム２の表
面に沿つて滑り記録ヘツド６に対するずれを生じ
得るとしたが、この場のずれを防止する各種対策
が提案されている。Embodiment In the above description, it has been assumed that the recording paper 3 may slide along the surface of the drum 2 and may be misaligned with respect to the recording head 6, but various measures have been proposed to prevent this misalignment.
第４図は、記録紙３の表面左側端縁に沿つて正
方形の孔１４ａの列を設け、その右側端縁には記
録紙３の幅方向に細長い矩形孔１４ｂの列を設け
た例を示す。左側の正方形孔１４ａには、孔の周
囲とぴつたり接触する送り爪１５を嵌合させ、記
録紙３の左側辺が記録紙幅方向にずれない様にし
ながら記録紙３を送る。他方、記録紙３の右側に
は、記録紙幅方向に間隙をおいて矩形孔１４ｂと
接触する送り爪１５を嵌合させ、幅方向の伸縮に
応じて矩形孔１４ｂが送り爪１５に対してずれる
様にして記録紙３の幅方向伸縮を吸収すると共に
両側側辺１３ａ，１３ｂを平行に送る。添付図で
は簡明のため送り爪１５に比し孔１４ａ，１４ｂ
を誇張して大きく示す。 FIG. 4 shows an example in which a row of square holes 14a is provided along the left edge of the surface of the recording paper 3, and a row of elongated rectangular holes 14b is provided along the right edge of the recording paper 3 in the width direction of the recording paper 3. . A feeding pawl 15 that tightly contacts the periphery of the hole is fitted into the left square hole 14a, and the recording paper 3 is fed while preventing the left side of the recording paper 3 from shifting in the width direction of the recording paper. On the other hand, on the right side of the recording paper 3, a feeding pawl 15 is fitted, which contacts the rectangular hole 14b with a gap in the width direction of the recording paper, so that the rectangular hole 14b shifts with respect to the feeding pawl 15 in response to expansion and contraction in the width direction. In this manner, expansion and contraction of the recording paper 3 in the width direction is absorbed, and both sides 13a and 13b are fed in parallel. In the attached drawings, the holes 14a and 14b are compared to the feed claw 15 for the sake of clarity.
exaggerate and show it in a big way.
この例の様に記録紙３のずれがその片側の側辺
１３ｂだけに限定されている場合には、光センサ
１１はずれの起り得る側辺１３ｂに対してのみ設
けなければ十分である。 If the displacement of the recording paper 3 is limited to only one side 13b as in this example, it is sufficient to provide the optical sensor 11 only on the side 13b where the displacement may occur.
考案の効果
以上説明した如く、本考案は、記録計の固定枠
に取付けた光センサを用いて記録紙の側辺を検出
するので、次の効果を奏する。Effects of the Invention As explained above, the present invention detects the sides of the recording paper using the optical sensor attached to the fixed frame of the recorder, and therefore has the following effects.
(イ) 記録ヘツドの初期調整が簡単になり、検査工
程の作業性が著しく向上するので、製造コスト
の低減が期待できる。(a) Since the initial adjustment of the recording head becomes easier and the workability of the inspection process is significantly improved, a reduction in manufacturing costs can be expected.
(ロ) 光センサの特性にある程度のばらつきが許容
される。(b) A certain degree of variation in optical sensor characteristics is allowed.
(ハ) 固定枠に光センサが取付けられるので、振動
による光センサの劣化が防止される。(c) Since the optical sensor is attached to the fixed frame, deterioration of the optical sensor due to vibration is prevented.
(ニ) 固定枠に対する光センサの取付けに格別の精
度を要しない。(d) No particular precision is required to attach the optical sensor to the fixed frame.
(ホ) 記録紙に幅方向のずれ又は伸縮があつても正
確な記録をすることができる。(e) Accurate recording can be made even if the recording paper is misaligned or expanded in the width direction.
第１図は本考案の一実施例の一部切欠平面図、
第２図は第１図の線−における断面図、第３
図は第１図の矢印方向から見た正面図、第４図
は記録紙の説明図、第５図及び第６図は動作説明
図である。
１……固定枠、２……ドラム、３……記録紙、
４……主滑り軸、５……案内軸、６……記録ヘツ
ド、７……駆動ホイール、８……サーボ機構、９
……紙押えローラ、１０……座標検出器、１１…
…光センサ、１２……遮蔽部、１３ａ……左側
辺、１３ｂ……右側辺、１４ａ，１４ｂ……孔、
１５……送り爪、１６……張糸。
FIG. 1 is a partially cutaway plan view of an embodiment of the present invention.
Figure 2 is a sectional view taken along the line - in Figure 1;
The figure is a front view seen from the direction of the arrow in FIG. 1, FIG. 4 is an explanatory diagram of the recording paper, and FIGS. 5 and 6 are explanatory diagrams of the operation. 1... Fixed frame, 2... Drum, 3... Recording paper,
4... Main sliding shaft, 5... Guide shaft, 6... Recording head, 7... Drive wheel, 8... Servo mechanism, 9
...Paper presser roller, 10...Coordinate detector, 11...
... Optical sensor, 12 ... Shielding part, 13a ... Left side, 13b ... Right side, 14a, 14b ... Hole,
15...Feeding claw, 16...Tension thread.
Claims (1)
の記録ヘツドにより記録をする記録計において、
記録計固定枠の前記記録位置に対向する部位に前
記記録紙の側辺部分からの反射光を検出する如く
取付けられた光センサ、前記記録ヘツドの移動に
応じ前記記録位置と前記光センサとの間に進入し
得る如く前記記録ヘツドに固定された遮蔽部、及
び前記光センサに向う前記記録紙面からの反射光
が前記遮蔽部によりすべて遮断される時の前記遮
蔽部の位置座標を前記固定枠から見た前記記録紙
側辺の座標として検出する座標検出器を備えてな
る記録紙の側辺検出装置。 In a recorder that records on recording paper at a recording position with a recording head that is movable in the width direction of the recording paper,
An optical sensor is attached to a portion of the recorder fixing frame opposite to the recording position to detect the reflected light from the side portion of the recording paper, and an optical sensor is attached to a portion of the recorder fixing frame opposite to the recording position, and an optical sensor is installed to detect the reflected light from the side portion of the recording paper, and the optical sensor is connected to the recording position according to the movement of the recording head. A shielding portion is fixed to the recording head so as to be able to enter between the recording head and the position coordinates of the shielding portion when all reflected light from the recording paper surface toward the optical sensor is blocked by the shielding portion. A side edge detection device for recording paper, comprising a coordinate detector that detects the coordinates of the side edge of the recording paper as viewed from above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985120006U JPH052825Y2 (en) | 1985-08-05 | 1985-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985120006U JPH052825Y2 (en) | 1985-08-05 | 1985-08-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6228121U JPS6228121U (en) | 1987-02-20 |
| JPH052825Y2 true JPH052825Y2 (en) | 1993-01-25 |
Family
ID=31007917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985120006U Expired - Lifetime JPH052825Y2 (en) | 1985-08-05 | 1985-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH052825Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02193385A (en) * | 1989-01-20 | 1990-07-31 | Pioneer Electron Corp | Recording medium playing device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52150057A (en) * | 1976-06-08 | 1977-12-13 | Matsushita Electric Ind Co Ltd | Paper feeding device |
-
1985
- 1985-08-05 JP JP1985120006U patent/JPH052825Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52150057A (en) * | 1976-06-08 | 1977-12-13 | Matsushita Electric Ind Co Ltd | Paper feeding device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6228121U (en) | 1987-02-20 |
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