JPH0886625A - Tape shape measuring method and device - Google Patents
Tape shape measuring method and deviceInfo
- Publication number
- JPH0886625A JPH0886625A JP22387494A JP22387494A JPH0886625A JP H0886625 A JPH0886625 A JP H0886625A JP 22387494 A JP22387494 A JP 22387494A JP 22387494 A JP22387494 A JP 22387494A JP H0886625 A JPH0886625 A JP H0886625A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- displacement
- measured
- measuring
- measurement
- 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.)
- Pending
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
(57)【要約】
【目的】 ビデオテープ等の電気的特性等の品質の維
持、向上を図るために、テープの平滑さの１つである粗
大のうねり、折れ等に関する形状を、定量的に、迅速か
つ高精度で測定できるテープ形状測定方法および装置を
提供する。
【構成】 測定したい磁気テープ１０の部分を磁気テー
プ台２にセットし、テープ両端に重り３で荷重を与えて
測定範囲に張力を与える。これにより、記録再生特性に
影響する粗大なうねりや折れ等を、使用時等とほぼ同等
な、あるいは近い状態においてテープ表面に具現化す
る。このように張力を与えた磁気テープ１０の測定範囲
の表面を、ｘ，ｙ移動ステージ４に取り付けたレーザー
変位計１によって走査しながら測定する。以上により、
テープの厚み方向のうねりや折れ等を、変位という定量
的な値で迅速にかつ高精度に測定可能とする。
(57) [Abstract] [Purpose] To maintain and improve the quality of the electrical characteristics of video tapes, etc., quantitatively determine the shape of the tape's smoothness, such as coarse undulations and creases. The present invention provides a tape shape measuring method and device capable of quick and highly accurate measurement. [Structure] A portion of a magnetic tape 10 to be measured is set on a magnetic tape base 2, and a load is applied to both ends of the tape by weights 3 to apply tension to a measurement range. As a result, coarse undulations, breaks, etc. that affect the recording / reproducing characteristics are embodied on the tape surface in a state that is approximately the same as or close to that during use. The surface of the magnetic tape 10 thus tensioned in the measurement range is measured by scanning with the laser displacement meter 1 attached to the x, y moving stage 4. From the above,
It enables rapid and highly accurate measurement of undulations and folds in the tape thickness direction with a quantitative value called displacement.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ビデオテープ等の製造
過程において、電気的特性についての品質の維持、向上
等を図るために、特に厚み方向のテープ形状を定量的に
測定可能にしたテープ形状測定方法および装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a tape in which the tape shape in the thickness direction can be quantitatively measured in order to maintain or improve the quality of electrical characteristics in the manufacturing process of video tapes and the like. The present invention relates to a shape measuring method and device.
【０００２】[0002]
【従来の技術】ビデオテープ等においては、テープ上に
僅かな形状不良部分、劣化部分があっても記録再生特性
の悪化を招く。このことは、高密度記録になるほど顕著
になる。従って、形状劣化等は極力、少なく抑える必要
がある。そこで欠かせないのが、テープの形状測定であ
る。2. Description of the Related Art In a video tape or the like, the recording / reproducing characteristics are deteriorated even if there is a slight shape defect or deterioration on the tape. This becomes remarkable as the recording density becomes higher. Therefore, it is necessary to suppress the deterioration of the shape as much as possible. Therefore, it is essential to measure the tape shape.
【０００３】従来、ビデオテープの形状測定装置として
は、図６に示すように、ビデオテープ１０のｘ方向（走
行方向）の伸縮、ｙ方向（走行方向に対し直角方向）の
幅、蛇行、等が測定可能な装置があった。これに対し、
テープ１０の厚み方向であるｚ軸方向の形状測定は、目
視のみの測定であった。Conventionally, as a shape measuring device of a video tape, as shown in FIG. 6, expansion and contraction of the video tape 10 in the x direction (running direction), width in the y direction (direction perpendicular to the running direction), meandering, etc. There was a measurable device. In contrast,
The shape measurement in the z-axis direction, which is the thickness direction of the tape 10, was a visual measurement only.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の技術で述べたように、テープ形状の厚み方向に対し
て目視のみの測定では、人間の感覚に頼る所が大きく、
さまざまな値が出現するため、磁気テープ、特に高密度
記録磁気テープの電気的特性との関係を明確にすること
ができなかった。However, as described in the above-mentioned prior art, in visual measurement only in the thickness direction of the tape shape, there is a large reliance on the human sense.
Due to the appearance of various values, it was not possible to clarify the relationship with the electrical characteristics of magnetic tapes, especially high density recording magnetic tapes.
【０００５】磁気テープ、特に高密度記録磁気テープに
おいては適正な記録再生特性が得られなければならな
い。適正な記録再生特性を得るためには、磁気テープの
形状が極力平滑でなければならない。この平滑さを半永
久的に保つ事は、磁気テープの材質量を決定するのに、
重要な事項の１つである。Appropriate recording / reproducing characteristics must be obtained in magnetic tapes, especially in high-density recording magnetic tapes. In order to obtain proper recording / reproducing characteristics, the shape of the magnetic tape must be as smooth as possible. Keeping this smoothness semi-permanently determines the material amount of the magnetic tape.
This is one of the important matters.
【０００６】このような事情から、磁気テープの電気的
特性等についての品質の維持、向上を図る上で、目視に
たよることなく、定量的に厚み方向の測定ができる測定
装置が望まれていた。Under these circumstances, in order to maintain and improve the quality of the electrical characteristics of the magnetic tape, a measuring device capable of quantitatively measuring the thickness direction without relying on visual observation is desired. It was
【０００７】そこで、本発明は、このような課題を解決
するために、ビデオテープ等における平滑さの１つであ
る粗大（１００μｍ領域）のうねり、折れ等に関する形
状を定量的に迅速、かつ高精度に測定できるテープ形状
測定方法および装置を提供することを目的とする。Therefore, in order to solve such a problem, the present invention quantitatively quickly and accurately determines a shape relating to undulations and folds of coarse (100 μm region) which is one of the smoothness of video tapes. It is an object of the present invention to provide a tape shape measuring method and device capable of measuring with accuracy.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
め、本発明では、まず、被測定テープの測定範囲に張力
を与え、次に前記張力を与えた被測定テープ表面の変位
を変位測定手段で走査しながら測定するテープ形状測定
方法を手段とする。In order to achieve the above object, in the present invention, first, tension is applied to the measurement range of the tape to be measured, and then the displacement of the surface of the tape to be measured to which the tension is applied is measured. A tape shape measuring method for measuring while scanning with a means is used.
【０００９】あるいは、被測定テープの測定範囲に張力
を与える張力発生手段と、前記張力を与えた被測定テー
プの測定範囲の表面の変位を測定する変位測定手段と、
前記変位測定手段を載置しその測定点を前記測定範囲に
おいて走査する走査手段と、前記測定した変位を記録す
る記録手段と、を具備する構成のテープ形状測定装置を
手段とする。Alternatively, tension generating means for applying tension to the measuring range of the tape to be measured, and displacement measuring means for measuring the displacement of the surface of the measuring range of the tape to be tensioned,
A tape shape measuring apparatus having a structure including: a scanning unit that mounts the displacement measuring unit and scans the measuring point in the measuring range; and a recording unit that records the measured displacement.
【００１０】上記の測定装置においては、測定した変位
の記録に基づいて、テープ形状図または変位の最大値を
求める処理を含むデータ処理を行い、その処理結果を出
力するデータ処理手段を設けるのが、より分かりやすい
測定結果を得る上で好適である。In the above-mentioned measuring device, data processing means is provided for performing data processing including processing for obtaining the maximum value of the tape shape diagram or displacement based on the recorded displacement, and data processing means for outputting the processing result is provided. It is suitable for obtaining a more easily understandable measurement result.
【００１１】また、上記の変位測定手段としてレーザー
変位計を用いるのが、高精度な測定を行う上で好適であ
る。Further, it is preferable to use a laser displacement meter as the above displacement measuring means in order to perform highly accurate measurement.
【００１２】[0012]
【作用】本発明のテープ形状測定方法および装置では、
被測定テープの測定範囲に張力を与えることにより、記
録再生特性に影響する粗大なうねりや折れ等を、使用時
等とほぼ同等な、あるいはそれに近い状態においてテー
プ表面に具現化する。このように張力を与えたテープ表
面を、レーザー変位計等の変位測定手段によって測定範
囲を走査しながら測定することにより、テープの厚み方
向のうねりや折れ等を、変位という定量的な値で迅速に
かつ高精度に測定可能とする。In the tape shape measuring method and apparatus of the present invention,
By applying tension to the measurement range of the tape to be measured, coarse undulations and breaks that affect the recording / reproducing characteristics are embodied on the tape surface in a state almost equal to or close to that during use. By measuring the tensioned tape surface while scanning the measurement range with a displacement measuring device such as a laser displacement meter, it is possible to quickly measure the waviness and crease in the thickness direction of the tape with a quantitative value called displacement. Highly accurate measurement is possible.
【００１３】[0013]
【実施例】以下、本発明の実施例を、図面を参照して詳
細に説明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【００１４】図１は本発明の一実施例を示す構成図であ
る。図において、１はレーザー変位計であり、レーザー
方式を用いて例えば１／１０００ｍｍ程度の測定精度で
磁気テープ１０表面の変位を測定する機能を有する。２
は磁気テープ台であり、磁気テープ１０を載せる台であ
って磁気テープ１０のエッジ部を合わせる基準ラインが
引いてある。３は重りであり、磁気テープ１０の両端に
荷重を与えて磁気テープ１０に張力を与えるものであ
る。４はｘ，ｙ移動ステージであり、レーザー変位計１
を取り付けている台である。ｘ，ｙ移動ステージ４は、
図略の基台に２つ重なって取り付けてあり、一方はｘ方
向、他方はｙ方向に移動し、レーザー変位計１の測定点
を磁気テープ１０の測定範囲において走査する。これら
は手動でもダイヤルの操作によって容易に移動できるも
のである。５はコンピュータであり、ｘ，ｙ移動ステー
ジ４の動作を制御する手段であり、レーザー変位計１で
測定した変位量を記録してデータ処理する手段でもあ
る。６はペンレコーダであり、レーザー変位計１のアナ
ログ電圧を入力し、随時、変位量を目視観察できるよう
に設置している。FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, reference numeral 1 denotes a laser displacement meter, which has a function of measuring the displacement of the surface of the magnetic tape 10 with a measurement accuracy of, for example, about 1/1000 mm using a laser system. Two
Is a magnetic tape table, and is a table on which the magnetic tape 10 is placed, and a reference line for aligning the edge portions of the magnetic tape 10 is drawn. A weight 3 applies a load to both ends of the magnetic tape 10 to apply tension to the magnetic tape 10. 4 is an x, y moving stage, a laser displacement meter 1
It is the base to which is attached. The x, y moving stage 4 is
Two of them are mounted on a base (not shown) so that one moves in the x direction and the other moves in the y direction to scan the measurement point of the laser displacement meter 1 in the measurement range of the magnetic tape 10. These can be easily moved manually by operating the dial. Reference numeral 5 denotes a computer, which is means for controlling the operation of the x, y moving stage 4, and is also means for recording the amount of displacement measured by the laser displacement meter 1 and processing the data. Reference numeral 6 denotes a pen recorder, which is installed so that the analog voltage of the laser displacement meter 1 is input and the displacement amount can be visually observed at any time.
【００１５】次に、本発明の測定方法と、上記装置の動
作を合わせて説明する。図２はその測定方法の一実施例
を示すフローチャートであり、図３は上記装置のレーザ
ー変位計１の動作例を示すフローチャートである。本例
の測定方法は、以下の手順による。Next, the measuring method of the present invention and the operation of the above apparatus will be described together. FIG. 2 is a flow chart showing an embodiment of the measuring method, and FIG. 3 is a flow chart showing an operation example of the laser displacement meter 1 of the above apparatus. The measuring method of this example is as follows.
【００１６】（１）コンピュータ５を立ち上げ、同時に
付随するディスクを立ち上げるとともに、測定テープ名
を入力する。(1) The computer 5 is started up, and at the same time, the associated disk is started up, and the measurement tape name is input.
【００１７】（２）測定したい部分の磁気テープ１０
（例えば３０ｃｍ長）を磁気テープ台３の規定位置（基
準ライン）に載せ、テープ両端に重り３により、例えば
３ｇの荷重をかけて張力を与える。(2) Magnetic tape 10 of the portion to be measured
(For example, a length of 30 cm) is placed on a specified position (reference line) of the magnetic tape base 3, and a load of, for example, 3 g is applied to both ends of the tape by the weights 3 to apply tension.
【００１８】（３）測定開始ポイントを決め、ｘ，ｙ移
動ステージ４のダイアルでレーザー変位計１から投射さ
れるレーザースポットを、磁気テープ１０の測定範囲の
開始点に合わせる。(3) The measurement start point is determined, and the laser spot projected from the laser displacement meter 1 is adjusted to the start point of the measurement range of the magnetic tape 10 by the dial of the x, y moving stage 4.
【００１９】（４）下記の測定条件をコンピュータ５に
入力する。(4) Input the following measurement conditions into the computer 5.
【００２０】ａ）ｘ方向の移動距離（ＸI）ｍｍ ｂ）ｘ方向の移動速度（ＸS）ｍｍ／ｓ ｃ）ｙ方向の移動ピッチ（ＹP）ｍｍと、測定数（Ｎ） ｄ）ｚ方向の倍率（Ｚ） （５）測定スタートボタン（例えば、コンピュータ５の
リターンキー）を押すとともに、ペンレコーダ６のＯＮ
スイッチを押す。これにより、図１のレーザー変位計１
は、図３のように動作する。A) moving distance in the x direction (X I ) mm b) moving speed in the x direction (X S ) mm / s c) moving pitch in the y direction (Y P ) mm and number of measurements (N) d) Magnification in Z direction (Z) (5) Press the measurement start button (for example, the return key of the computer 5) and turn on the pen recorder 6.
Press the switch. As a result, the laser displacement meter 1 of FIG.
Operates as in FIG.
【００２１】ａ）レーザー変位計１が、ｘ方向にＸSｍ
ｍ／ｓの速度でＸIｍｍまで移動しながらテープ１０の
表面の変位を測定する。その時の変位量は、コンピュー
タ５のディスクに記録されとともに、ペンレコーダ６に
記録される。なお、ペンレコーダ６には、図４のよう
に、記録紙の時間方向を磁気テープのｘ方向として一回
の走査毎にｚ方向の測定変位が記録される。A) The laser displacement meter 1 has X S m in the x direction.
The displacement of the surface of the tape 10 is measured while moving to X I mm at a speed of m / s. The displacement amount at that time is recorded on the disc of the computer 5 and also on the pen recorder 6. It should be noted that, as shown in FIG. 4, the pen recorder 6 records the measured displacement in the z direction for each scan with the time direction of the recording paper as the x direction of the magnetic tape.
【００２２】ｂ）レーザー変位計１は、ＸIｍｍ移動し
た時点で例えば２０ｍｍ／ｓの速度で移動開始点にもど
る。B) The laser displacement meter 1 returns to the movement start point at a speed of, for example, 20 mm / s when it moves X I mm.
【００２３】ｃ）１ピッチＹPｍｍ分だけレーザー変位
計１がｙ方向に移動する。なお、上記したｂ），ｃ）の
移動は同時に行っても良い。C) The laser displacement meter 1 moves in the y direction by one pitch Y P mm. The above movements b) and c) may be performed simultaneously.
【００２４】ｄ）上記ａ）〜ｃ）をＮ回繰り返したら測
定動作を終了する。D) After repeating steps a) to c) N times, the measurement operation is terminated.
【００２５】（６）レーザー変位計の測定動作終了後、
コンピュータ５はディスク上のデータをひろって自動的
にテープ形状図を作成したり、変位の最大（ＭＡＸ）値
を求めたりするなどのデータ処理を行う。(6) After the measurement operation of the laser displacement meter is completed,
The computer 5 performs data processing such as automatically creating a tape shape diagram by obtaining data on the disk and obtaining a maximum (MAX) value of displacement.
【００２６】（７）コンピュータ５は、上記データ処理
の結果を、例えば図５に示すようなフォーマットに従
い、コンピュータ５に接続された図略のプリンタ等によ
り、プリントアウトする。(7) The computer 5 prints out the result of the above data processing by a printer (not shown) or the like connected to the computer 5 according to the format shown in FIG. 5, for example.
【００２７】（８）以上で測定を終了する場合には、ペ
ンレコーダ６およびコンピュータ５をＯＦＦにする。(8) When the measurement is completed after the above steps, the pen recorder 6 and the computer 5 are turned off.
【００２８】なお、本発明では、レーザー変位計と同等
以上の測定機能を有する変位測定機が使用可能である。
上記実施例では、磁気テープをサンプル的に切り取って
磁気テープ台２にセットしたが、テープカセット等から
テープを引き出して、テープの２つの巻き取り軸等にテ
ープを引っ張るような回転力を与えたり、あるいは固定
したテープの測定範囲外の一部を押さえ込んだりするこ
とで、測定範囲に張力を与えるようにしても良い。この
ように本発明は、その主旨に沿って種々に応用され、種
々の実施態様を取り得るものである。In the present invention, a displacement measuring machine having a measuring function equal to or higher than that of the laser displacement meter can be used.
In the above-mentioned embodiment, the magnetic tape was cut as a sample and set on the magnetic tape base 2. However, the tape is pulled out from the tape cassette or the like, and a rotational force such as pulling the tape is applied to the two winding shafts of the tape. Alternatively, the tension may be applied to the measuring range by pressing a part of the fixed tape outside the measuring range. As described above, the present invention can be applied in various ways in accordance with the gist thereof and can take various embodiments.
【００２９】[0029]
【発明の効果】以上の説明で明らかなように、本発明テ
ープ形状測定方法および装置によれば、以下のような効
果が得られる。As is apparent from the above description, the tape shape measuring method and apparatus of the present invention have the following effects.
【００３０】（１）テープの厚み方向の形状を定量的に
表現できるようになり、形状と記録再生、特に高密度記
録再生における電気的特性との関係を明らかにすること
が可能になる。(1) It becomes possible to quantitatively express the shape of the tape in the thickness direction, and it becomes possible to clarify the relationship between the shape and the electrical characteristics in recording / reproduction, particularly in high-density recording / reproduction.
【００３１】（２）形状変化、劣化に伴なう電気的特性
の悪化のメカニズム解明、および磁気テープの磁性面、
ベース、バック面の材質の選定等に大いに役立つ情報が
得られる。(2) Elucidation of mechanism of deterioration of electrical characteristics due to shape change and deterioration, and magnetic surface of magnetic tape,
Information can be obtained that is extremely useful in selecting materials for the base and back surfaces.
【図１】本発明の一実施例を示す装置構成図FIG. 1 is a device configuration diagram showing an embodiment of the present invention.
【図２】本発明の測定方法の一実施例を示すフローチャ
ートFIG. 2 is a flowchart showing an embodiment of the measuring method of the present invention.
【図３】上記装置の実施例におけるレーザー変位計の動
作を示すフローチャートFIG. 3 is a flowchart showing the operation of the laser displacement meter in the embodiment of the above device.
【図４】上記測定方法の実施例におけるペンレコーダに
よる記録例を示す図FIG. 4 is a diagram showing an example of recording by a pen recorder in the embodiment of the above measuring method.
【図５】上記測定方法の実施例におけるデータ処理結果
のプリントアウト例を示す図FIG. 5 is a diagram showing a printout example of a data processing result in the embodiment of the above measuring method.
【図６】磁気テープの説明図FIG. 6 is an explanatory diagram of a magnetic tape.
【符号の説明】 １…レーザー変位計 ２…磁気テープ台 ３…重り ４…ｘ，ｙ移動ステージ ５…コンピュータ ６…ペンレコーダ[Explanation of Codes] 1 ... Laser displacement meter 2 ... Magnetic tape stand 3 ... Weight 4 ... x, y moving stage 5 ... Computer 6 ... Pen recorder
Claims (4)
与え、次に前記張力を与えた被測定テープ表面の変位を
変位測定手段で走査しながら測定することを特徴とする
テープ形状測定方法。1. A tape shape measuring method characterized in that first, tension is applied to a measurement range of a tape to be measured, and then displacement of the surface of the tape to be measured to which the tension is applied is measured while scanning by a displacement measuring means. .
張力発生手段と、前記張力を与えた被測定テープの測定
範囲の表面の変位を測定する変位測定手段と、前記変位
測定手段を載置しその測定点を前記測定範囲において走
査する走査手段と、前記測定した変位を記録する記録手
段と、を具備することを特徴とするテープ形状測定装
置。2. A tension generating means for applying a tension to a measuring range of a tape to be measured, a displacement measuring means for measuring a displacement of a surface in a measuring range of the tape to be measured to which the tension is applied, and a displacement measuring means mounted thereon. A tape shape measuring device comprising: a scanning unit that scans the measurement point in the measurement range; and a recording unit that records the measured displacement.
状図または変位の最大値を求める処理を含むデータ処理
を行いその処理結果を出力するデータ処理手段を有する
ことを特徴とする請求項２記載のテープ形状測定装置。3. A data processing means for carrying out data processing including processing for obtaining a maximum value of the tape shape diagram or displacement based on the record of the measured displacement, and outputting the processing result. Tape shape measuring device.
いることを特徴とする請求項２または請求項３記載のテ
ープ形状測定装置。4. A tape shape measuring device according to claim 2, wherein a laser displacement meter is used as the displacement measuring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22387494A JPH0886625A (en) | 1994-09-20 | 1994-09-20 | Tape shape measuring method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22387494A JPH0886625A (en) | 1994-09-20 | 1994-09-20 | Tape shape measuring method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0886625A true JPH0886625A (en) | 1996-04-02 |
Family
ID=16805069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22387494A Pending JPH0886625A (en) | 1994-09-20 | 1994-09-20 | Tape shape measuring method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0886625A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007253221A (en) * | 2006-03-24 | 2007-10-04 | Tokyu Car Corp | Laser welding method |
-
1994
- 1994-09-20 JP JP22387494A patent/JPH0886625A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007253221A (en) * | 2006-03-24 | 2007-10-04 | Tokyu Car Corp | Laser welding method |
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