JPS63201910A - Recording device for magnetic head position measurement signal - Google Patents

Recording device for magnetic head position measurement signal

Info

Publication number
JPS63201910A
JPS63201910A JP3400087A JP3400087A JPS63201910A JP S63201910 A JPS63201910 A JP S63201910A JP 3400087 A JP3400087 A JP 3400087A JP 3400087 A JP3400087 A JP 3400087A JP S63201910 A JPS63201910 A JP S63201910A
Authority
JP
Japan
Prior art keywords
magnetic head
disk
magnetic
recording
shifting
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
Application number
JP3400087A
Other languages
Japanese (ja)
Inventor
Nobuyuki Adachi
安達 延行
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP3400087A priority Critical patent/JPS63201910A/en
Publication of JPS63201910A publication Critical patent/JPS63201910A/en
Pending legal-status Critical Current

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  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Moving Of Heads (AREA)

Abstract

PURPOSE:To accurately and freely set the azimuth angle of a magnetic head by providing a structure which can shift the head in the directions of two axes which are orthogonal within a plate parallel to that of a magnetic disk. CONSTITUTION:A rotary origin detector 5 detecting a slit 4 in the peripheral part of the plate 3 is disposed in a position where a rotary origin detection pulse can be detected without fail at a timing before a magnetic head 6 for writing a magnetic head position measurement signal on an alignment disk 1 comes on a track starting point 1. Furthermore, a titled device consists of a magnetic head carriage member 7 shifting the magnetic head 6 in the directions of two axes within the plate parallel to that of the alignment disk 1, the shifting table for X-axis direction 8 of the carriage member 7 to the direction of an X-axis, and the shifting table for Y-axis direction 9 of the member to the direction of an Y-axis. With knobs 8a and 9a, and the shifting tables 8 and 9 can accurately be shift-operated. Thus, the shifting structure of the magnetic head is simplified and the head can be set in an objective position accurately and freely, whereby the adjusting precision of the azimuth angle can be improved.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は磁気信号記録再生装置の磁気ヘッドの位置調整
に用いられる測定用記録媒体に測定信号を記録するため
の磁気ヘッド位置測定用信号の記録装置に関するもので
ある。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is directed to a magnetic head position measurement signal for recording a measurement signal on a measurement recording medium used for position adjustment of a magnetic head of a magnetic signal recording/reproducing device. This relates to a recording device.

(従来の技術) 磁気信号記録再生装置の製造工程において、磁気ヘッド
の位置調整を行なうため、磁気ヘッド位置測定用信号を
記録された測定用ディスク(以下アラインメントディス
クという。)を該装置に装着して回転せしめ、再生され
たこの測定用信号を検査することにより上記磁気ヘッド
の位置を測定する方法が知られている。ところで、この
アラインメントディスクに上記測定用信号を記録するた
めに磁気ヘッド位置測定用信号の記録装置が使用される
が、このような記録@訛は互いに異なるアジマス角度に
より記録される信号群からなるアジマスバースト信号等
を記録するために、磁気ヘッドのアジマス角度を一定の
If!囲で自由に設定し得るような機構を設ける必要が
ある。
(Prior Art) In the manufacturing process of a magnetic signal recording/reproducing device, in order to adjust the position of the magnetic head, a measurement disk (hereinafter referred to as an alignment disk) on which a signal for measuring the position of the magnetic head is recorded is mounted on the device. A known method is to measure the position of the magnetic head by rotating the magnetic head and inspecting the reproduced measurement signal. By the way, a magnetic head position measurement signal recording device is used to record the above measurement signals on this alignment disk, but such recording @accent is an azimuth recording device consisting of a group of signals recorded at mutually different azimuth angles. In order to record burst signals etc., the azimuth angle of the magnetic head is set at a constant If! It is necessary to provide a mechanism that allows for free settings within the surrounding area.

従来の記録@置はこのような機構として、磁気ヘッドの
ギャップの中心を回転中心として磁気ヘッドを回転し得
るような機構を備えていた。
Conventional recording devices have been equipped with such a mechanism that allows the magnetic head to rotate about the center of the gap between the magnetic heads.

(発明が解決しようとする問題点) ところが上述したような記録装置において、微小な磁気
ヘッドのギャップの中心を正確に磁気ヘッドの回転中心
とすることは難しく、精度がとれないため、このような
磁気ヘッドによってはアジマス角度を正確かつ自由に設
定することが困難であった。
(Problem to be Solved by the Invention) However, in the above-mentioned recording device, it is difficult to accurately set the center of the gap between the minute magnetic heads as the center of rotation of the magnetic head, and accuracy cannot be achieved. Depending on the magnetic head, it is difficult to accurately and freely set the azimuth angle.

本発明はこのような問題を解決するためになされたもの
であり、磁気ヘッドのアジマス角度を正確かつ自由に設
定することのできる磁気ヘッド位fi測定用信号の記録
装置を提供することを目的とするものである。
The present invention has been made in order to solve such problems, and an object thereof is to provide a recording device for a signal for measuring the magnetic head position fi, which can accurately and freely set the azimuth angle of the magnetic head. It is something to do.

(問題点を解決するための手段) 本発明の磁気ヘッド位置測定用信号の記録装置は、信号
記録が行なわれる際の磁気ディスク平面と平行な平面内
で直交する2軸方向に磁気ヘッドを移動し、これにより
磁気ヘッド位置におけるディスク半径方向とへラドギャ
ップの延びる方向とのなす角度を変更するようにしたこ
とを特徴とするものである。
(Means for Solving the Problems) The magnetic head position measurement signal recording device of the present invention moves the magnetic head in two orthogonal axes within a plane parallel to the magnetic disk plane during signal recording. However, this is characterized in that the angle formed between the disk radial direction and the direction in which the helad gap extends at the position of the magnetic head is changed.

ここで、[信号記録が行なわれる際の磁気ディスク平面
Jとは例えば装置のスピンドル上に磁気ディスクを載設
してチャッキングを行ない、この磁気ディスクに磁気記
録を行なう際の回転速度にて回転せしめた場合に形成さ
れる磁気ディスク平面をいう。
Here, [the magnetic disk plane J when signal recording is performed is, for example, when a magnetic disk is placed on the spindle of an apparatus, chucked, and rotated at the rotational speed when magnetic recording is performed on this magnetic disk. This refers to the magnetic disk plane formed when the magnetic disk is pressed.

また、「平面内で直交する2軸方向」とはこの平面内で
直交するのであればいかなる2軸であってもよく、2軸
の交点が必ずしもディスクの回転中心であることを要し
てない。なお、「直交する2軸方向に移動する」には、
一方の軸方向に固定とし、他方の軸方向にのみ移動する
場合も含めるものとする。
Furthermore, "two axes orthogonal in a plane" may refer to any two axes as long as they are orthogonal in this plane, and the intersection of the two axes does not necessarily have to be the center of rotation of the disk. . In addition, "move in two orthogonal axes directions"
This also includes the case where it is fixed in one axial direction and moves only in the other axial direction.

なお、上記平面内で直交し、その交点を磁気ディスクの
回転中心とする2軸をそれぞれX軸、Y軸とし、磁気ヘ
ッドの位置におけるディスク半径方向と磁気ヘッドのギ
ャップの延びる方向とのなす角度であるアジマス角度を
θとし、アジマス角度θが0度で記録半径がrであると
きの磁気ヘッドの位11Xo、Yoをそれぞれr si
nα、 r cosαとしたとき、任意のアジマス角度
θ工を得るための磁気ヘッドの座標位11Xt、Ytは
それぞれx、 −r sin  (θt +(2) 、
 Yl −r cos  (θ!+α)となる。
Note that the two axes that are orthogonal in the above plane and whose intersection is the center of rotation of the magnetic disk are referred to as the X axis and Y axis, respectively, and the angle formed between the disk radial direction at the position of the magnetic head and the direction in which the gap between the magnetic heads extends. Let the azimuth angle be θ, and the magnetic head positions 11Xo and Yo when the azimuth angle θ is 0 degrees and the recording radius is r si
When nα, r cosα, the coordinate positions 11Xt and Yt of the magnetic head to obtain an arbitrary azimuth angle θ are x, −r sin (θt + (2),
Yl −r cos (θ!+α).

(発明の効果) 本発明の磁気ヘッド位置測定用信号の記録装置によれば
、磁気ヘッドの位置変更を磁気ディスク平面と平行な平
面内の2軸方向に移動させることにより行なうようにし
ているので磁気ヘッド移動機構が簡易となり磁飽ヘッド
を所望の位置に正確かつ自由に設定することができる。
(Effects of the Invention) According to the magnetic head position measurement signal recording device of the present invention, the position of the magnetic head is changed by moving it in two axial directions within a plane parallel to the plane of the magnetic disk. The magnetic head moving mechanism becomes simple and the magnetic head can be accurately and freely set at a desired position.

この磁気ヘッドの設定位e(X、Y)は各々磁気ヘッド
の所定のアジマス角度θと対応しているので結局、磁気
ヘッドが所望のアジマス角度θとなるよう正確に設定す
ること、ができ、これによりアジマス角度θのg!l!
m度を上げることができる。
Since each set position e(X, Y) of the magnetic head corresponds to a predetermined azimuth angle θ of the magnetic head, it is possible to accurately set the magnetic head so that the desired azimuth angle θ is obtained. This gives g of the azimuth angle θ! l!
It can be increased by m degrees.

さらに、アジマス角度の調整精度が上がることから、正
確なアジマス角度測定信号(アジマス・バースト信号等
)を7ラインメントデイスクに書き込むことができ、ア
ラインメントディスクの製造歩溜りを上げることができ
る。
Furthermore, since the adjustment accuracy of the azimuth angle is improved, an accurate azimuth angle measurement signal (azimuth burst signal, etc.) can be written to the 7-alignment disk, and the manufacturing yield of the alignment disk can be increased.

(実 施 例) 以下、本発明の一実施例について図面を用いて説明する
(Example) An example of the present invention will be described below with reference to the drawings.

第1図は本発明に係る磁気ヘッド位置測定用信号の記録
装置の一実施例を示す概略図である。この記録装置は、
アラインメントディスク1″を載設して回転せしめるス
ピンドルモータ2、このスピンドルモータ2の回転軸に
取り付けられて、アラインメントディスク1と平行かつ
一体的に回転する回転原点検出用プレート3、筐体側に
固設され、上記プレート3の円周部の回転原点検出用ス
リット4を検出して回転原点検出パルスを出力する回転
原点検出器5、アラインメントディスク1に磁気ヘッド
位置測定用信号を帛き込むための磁気ヘッド6、スピン
ドル上に載設されたアラインメントディスク1の平面と
平行な平面内の2軸方向(X軸方向およびY軸方向)に
上記磁気ヘッド6を移動せしめる磁気へラドキャリッジ
部材7、磁気へラドキャリッジ部材7を支持して、この
キャリッジ部材7のX軸方向への移動操作を行なうX軸
方向移動テーブル8、上記キャリッジ部材7およびX軸
方向移動テーブル8を載設してこのキャリッジ部材7の
Y軸方向への移動操作を行なうY軸方向移動テーブル9
からなっている。なおこれらの移動テーブル8.9には
各々テーブル操作用つまみ8a、 9aが取り付けられ
ており、かかるつまみ8a、 9aの手動操作またはス
テップモータ等による自動操作によって両移動テーブル
8,9の正確な移動操作を行なうことができ、さらには
磁気ヘッド6を所望する位置に正確に配設することがで
きる。
FIG. 1 is a schematic diagram showing an embodiment of a magnetic head position measuring signal recording device according to the present invention. This recording device is
A spindle motor 2 on which the alignment disk 1'' is mounted and rotated, a rotation origin detection plate 3 that is attached to the rotating shaft of the spindle motor 2 and rotates in parallel with and integrally with the alignment disk 1, fixed to the housing side. A rotational origin detector 5 detects a rotational origin detection slit 4 on the circumference of the plate 3 and outputs a rotational origin detection pulse, and a magnetic field detects a rotational origin detection pulse for outputting a rotational origin detection pulse to the alignment disk 1. A magnetic head carriage member 7 for moving the magnetic head 6 in two axial directions (X-axis direction and Y-axis direction) within a plane parallel to the plane of the alignment disk 1 mounted on the spindle; An X-axis moving table 8 supports the rad carriage member 7 and moves the carriage member 7 in the X-axis direction; Y-axis direction movement table 9 that performs movement operation in the Y-axis direction.
It consists of These moving tables 8, 9 are each equipped with table operating knobs 8a, 9a, and both moving tables 8, 9 can be moved accurately by manual operation of these knobs 8a, 9a or automatic operation using a step motor or the like. In addition, the magnetic head 6 can be accurately placed at a desired position.

次に、上記装置を用いてアラインメントディスク1に磁
気ヘッド位置測定用信号を記録する際の磁気ヘッドGの
操作について第2図を用いて説明する。ここに、磁気ヘ
ッド6の移動し得る2軸方向をX軸方向およびY軸方向
とし、X−Y座標の原点をアラインメントディスク1の
回転中心とする。また、磁気ヘッド6の位置における半
径方向と磁気ヘッドのギャップの延びる方向とのなす角
度であるアジマス角度をθとし、アジマス角度θが0度
であるときのギャップの位116aにおける半径方向と
、記録トラック変更の際の磁気ヘッド移動方向くY軸方
向)のなす角度をオフセット角αとし、現在の記録半径
を「とする。今、アジマス角度θ1にてアジマス調整用
信号を記録しようとすると、ギャップの延びる方向を座
標軸に対して回転させることなくギヤツブ位1f6aを
中心角θlたけ矢印へ方向に回転移動せしめた位置であ
るギt?ツブ位[6bにギャップがくるように磁気ヘッ
ド6の位置設定を行なえばよいから、アジマス角度θ−
〇のときよりもX軸方向にΔX1Y軸方向にΔYだけ磁
気ヘッド6を移動すればよい。なお、第2図から明らか
なように、ΔX−r(sin(θ1 +α) −8in
 <2) 、ΔY−r(cos(θ凰+α)−CO3α
)となる。
Next, the operation of the magnetic head G when recording a magnetic head position measurement signal on the alignment disk 1 using the above apparatus will be explained with reference to FIG. Here, the two axes in which the magnetic head 6 can move are defined as the X-axis direction and the Y-axis direction, and the origin of the XY coordinates is defined as the center of rotation of the alignment disk 1. Further, the azimuth angle that is the angle between the radial direction at the position of the magnetic head 6 and the direction in which the gap of the magnetic head extends is θ, and the radial direction at the gap position 116a when the azimuth angle θ is 0 degrees and the recording The angle formed by the direction in which the magnetic head moves when changing tracks (Y-axis direction) is defined as the offset angle α, and the current recording radius is defined as .Now, if you try to record the azimuth adjustment signal at the azimuth angle θ1, the gap The position of the magnetic head 6 is set so that the gap is at the gear position [6b], which is the position where the gear position 1f6a is rotated in the direction of the arrow by the central angle θl without rotating the direction in which it extends with respect to the coordinate axis. Therefore, the azimuth angle θ−
It is sufficient to move the magnetic head 6 by ΔX in the X-axis direction and ΔY in the Y-axis direction compared to the case of ◯. Furthermore, as is clear from Fig. 2, ΔX−r(sin(θ1 +α) −8in
<2), ΔY−r(cos(θ凰+α)−CO3α
).

また、このように磁気ヘッド6をディスク円周方向に回
転させた場合、回転原点検出器5の位置によりては、磁
気ヘッド6がトラック始点上にくるタイミングよりも前
に回転原点検出パルスを検出できないことがある。この
ような場合には回転原点検出パルスを検出してから、ア
ラインメントディスク1を1回転近く回転させた後測定
信号の書込みが行なわれることとなり、記録タイミング
の精度が低下する。
Furthermore, when the magnetic head 6 is rotated in the disk circumferential direction in this way, depending on the position of the rotation origin detector 5, the rotation origin detection pulse may be detected before the magnetic head 6 reaches the track start point. There are things I can't do. In such a case, the measurement signal is written after the alignment disk 1 has been rotated nearly one revolution after the rotational origin detection pulse is detected, resulting in a decrease in recording timing accuracy.

そこで本実施例においては、磁気ヘッド6がトラック始
点上にくるタイミングよりも前(ディスクが一回転する
時間以内)に回転原点検出パルスを必ず検出し得るよう
な位置に回転原点検出器5を配設している。すなわち、
回転原点検出パルスを検出してから測定信号の書込みを
開始するまで(7)matt 1  (sea ) 、
 T4スクの回転数をN(rps>、信号記録の際に用
いられる最大のアジマス角度をθWaX  (正負いず
れの値も取り得る)としたとき、回転原点検出パルスを
検出してから磁気ヘッドがトラック始点上に来るまでの
期間t、(sec)が、 の条件を満足するようになっている。
Therefore, in this embodiment, the rotational origin detector 5 is arranged at a position where the rotational origin detection pulse can always be detected before the timing when the magnetic head 6 comes to the track start point (within the time for one rotation of the disk). It is set up. That is,
From detecting the rotation origin detection pulse to starting writing the measurement signal (7) matt 1 (sea),
When the rotation speed of the T4 disk is N (rps>) and the maximum azimuth angle used for signal recording is θWaX (can take either a positive or negative value), the magnetic head starts tracking after detecting the rotational origin detection pulse. The period t, (sec) until reaching the starting point satisfies the following conditions.

また、信号記録の際に用いられる最大のアジマス角度θ
−aXは通常±1°程度であって(オフセット角度αも
通常小さい)ディスク半径方向の変化分は極めて少量で
あるため、一般の磁気ディスク記録再生装置に使用され
ている磁気ヘッドの再生トラック幅よりも十分大きいト
ラック幅の磁気ヘッドを使用し、この磁気ヘッドをディ
スク半径方向と直角方向に移動させるようにすれば、磁
気ヘッドの一軸方向のみの移動によっても十分記録範囲
をカバーすることができる。
Also, the maximum azimuth angle θ used during signal recording
-aX is usually about ±1° (the offset angle α is also usually small), and the variation in the disk radial direction is extremely small, so the playback track width of the magnetic head used in general magnetic disk recording and playback devices is By using a magnetic head with a track width sufficiently larger than that of the disk and moving this magnetic head in a direction perpendicular to the radial direction of the disk, it is possible to sufficiently cover the recording range by moving the magnetic head only in one axis direction. .

なお、このアラインメントディスクをカートリッジに収
納した状態で測定信号の記録を□行なう場合には、磁気
ヘッドがカートリッジの磁気挿入口内で所望の範囲を移
動することができるようにこの磁気ヘッドの大きさを調
整しておくことが望ましい。
Note that when recording measurement signals with this alignment disk stored in a cartridge, the size of the magnetic head must be adjusted so that it can move within the desired range within the magnetic insertion slot of the cartridge. It is advisable to adjust it.

なお、上記実施例においてはX軸、Y軸の交点をディス
クの回転中心としているが、この交点の位Ifは必ずし
もこれに限られるものではない。
In the above embodiment, the intersection of the X-axis and the Y-axis is set as the center of rotation of the disk, but the position If of this intersection is not necessarily limited to this.

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

第1図は本発明に係る磁気ヘッド位置測定用信号の記録
装置の一実施例を示す概略図、第2@lは第1図に示す
装置を用いてアラインメントディスクに磁気ヘッド位置
測定用信号を記録づる操作を説明するための概略図であ
る。 1・・・測定用磁気ディスク (アラインメントディスク) 5・・・回転原点検出器 6・・・磁気ヘッド 8・・・X軸方向移動テーブル 9・・・Y軸方向移動テーブル 第1図 第211
FIG. 1 is a schematic diagram showing an embodiment of a magnetic head position measurement signal recording device according to the present invention, and FIG. FIG. 3 is a schematic diagram for explaining a recording operation. 1... Magnetic disk for measurement (alignment disk) 5... Rotation origin detector 6... Magnetic head 8... X-axis direction moving table 9... Y-axis direction moving table Fig. 1 211

Claims (1)

【特許請求の範囲】 1)記録用磁気ヘッドを、信号記録が行なわれる際の磁
気ディスクの平面と平行な平面内で直交する2軸方向に
移動し得る機構を備えてなることを特徴とする磁気ヘッ
ド位置測定用信号の記録装置。 2)前記磁気ディスクのトラックの始点が磁気ヘッドに
より検出される時点より前に該磁気ディスクの回転原点
検出パルスが検出されるように、該パルスを検出する回
転原点検出器が配設されていることを特徴とする特許請
求の範囲第1項記載の磁気ヘッド位置測定用信号の記録
装置。
[Claims] 1) The recording magnetic head is characterized by being equipped with a mechanism capable of moving the recording magnetic head in two axes perpendicular to each other within a plane parallel to the plane of the magnetic disk during signal recording. Recording device for magnetic head position measurement signals. 2) A rotational origin detector for detecting the rotational origin detection pulse of the magnetic disk is arranged so that the rotational origin detection pulse of the magnetic disk is detected before the start point of the track of the magnetic disk is detected by the magnetic head. A recording device for magnetic head position measuring signals according to claim 1, characterized in that:
JP3400087A 1987-02-17 1987-02-17 Recording device for magnetic head position measurement signal Pending JPS63201910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3400087A JPS63201910A (en) 1987-02-17 1987-02-17 Recording device for magnetic head position measurement signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3400087A JPS63201910A (en) 1987-02-17 1987-02-17 Recording device for magnetic head position measurement signal

Publications (1)

Publication Number Publication Date
JPS63201910A true JPS63201910A (en) 1988-08-22

Family

ID=12402184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3400087A Pending JPS63201910A (en) 1987-02-17 1987-02-17 Recording device for magnetic head position measurement signal

Country Status (1)

Country Link
JP (1) JPS63201910A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63214971A (en) * 1987-03-03 1988-09-07 Copal Co Ltd Device for producing disk for adjusting positioning of magnetic head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63214971A (en) * 1987-03-03 1988-09-07 Copal Co Ltd Device for producing disk for adjusting positioning of magnetic head

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