JPS5845111B2 - magnetic head positioning device - Google Patents
magnetic head positioning deviceInfo
- Publication number
- JPS5845111B2 JPS5845111B2 JP2155377A JP2155377A JPS5845111B2 JP S5845111 B2 JPS5845111 B2 JP S5845111B2 JP 2155377 A JP2155377 A JP 2155377A JP 2155377 A JP2155377 A JP 2155377A JP S5845111 B2 JPS5845111 B2 JP S5845111B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- positional deviation
- positioning device
- head positioning
- positioning
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
Description
【発明の詳細な説明】
本発明は磁気ディスクに使用される磁気ヘッドの位置ぎ
め装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head positioning device used for a magnetic disk.
磁気ヘッドを精度良く位置ぎめするには、従来から、レ
ーザ測長器を用いた位置ぎめがなされてきた。Conventionally, a laser length measuring device has been used to accurately position the magnetic head.
すなわち、目的とする位置までの距離をレーザで精密に
測長し、その測定結果を磁気ヘッド駆動回路にフィード
・バックして、位置ぎめを行なった。That is, the distance to the target position was precisely measured using a laser, and the measurement results were fed back to the magnetic head drive circuit to perform positioning.
しかしながら、磁気ヘッドの交換を行なったり、経年変
化により磁気ヘッド位置がずれた場合の調整は、レーザ
測長値を見ながら、機械的に磁気ヘッドを前後に微動さ
せ、磁気ヘッド位置調整を行なった。However, when replacing the magnetic head or adjusting the position of the magnetic head due to aging, the magnetic head position is adjusted by mechanically moving the magnetic head back and forth slightly while observing the laser length measurement value. .
この方法では調整の精度が悪く、要求される精度が出な
いことがあると共に調整工数が大きいことが欠点であっ
た。This method has disadvantages in that the accuracy of adjustment is poor, the required accuracy may not be achieved, and the number of man-hours required for adjustment is large.
本発明の目的は、上記した従来技術の欠点をなくし、精
度良く、しかも簡単に磁気ヘッドの位置調整のできる磁
気ヘッド位置ぎめ装置を提供するにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic head positioning device that eliminates the above-mentioned drawbacks of the prior art and allows for accurate and easy position adjustment of a magnetic head.
上記目的を達成するため本発明はレーザ測長値から読み
取った磁気ヘッドの位置ずれ量を、数字スイッチに設定
し、この値を超小型中央処理装置に入力し、磁気ヘッド
の位置ずれ量をソフト的に考慮して磁気ヘッドの位置ぎ
めを行なうものである。In order to achieve the above object, the present invention sets the amount of positional deviation of the magnetic head read from the laser length measurement value into a numerical switch, inputs this value into a micro central processing unit, and calculates the amount of positional deviation of the magnetic head using software. The positioning of the magnetic head is performed taking into account the following.
本発明による一実施例を、添付図に示す。An embodiment according to the invention is shown in the accompanying drawing.
１が磁気ディスクであり、磁気ヘッド２は磁気ヘッド送
り機構１１により位置ぎめされる。1 is a magnetic disk, and a magnetic head 2 is positioned by a magnetic head transport mechanism 11.
３は磁気ヘッドの位置を測定するレーザ測長器であり、
４は、測長値表示器、６は位置ずれ量５を設定する数字
スイッチ、８は小形中央処理装置、１０は磁気ヘッド駆
動回路である。3 is a laser length measuring device that measures the position of the magnetic head;
4 is a length measurement value display, 6 is a numeric switch for setting the positional deviation amount 5, 8 is a small central processing unit, and 10 is a magnetic head drive circuit.
以下、動作を説明する。磁気ヘッド２の交換、もしくは
経年変化により、磁気ヘッドが原点からずれたとする。The operation will be explained below. Assume that the magnetic head 2 is displaced from the origin due to replacement or aging.
この位置ずれ量５は、レーザ測長器３で測定され、測長
値表示器４に表示されるので、その値を数字スイッチ６
に設定する。This positional deviation amount 5 is measured by the laser length measuring device 3 and displayed on the length measurement value display 4.
Set to .
小形中央処理装置８は、位置ずれ量５と位置ずれが無い
ときの磁気ヘッドの位置データ７とを読み取り、加減算
等の演算を行なって、修正された位置データ９を出力す
る。The small central processing unit 8 reads the positional deviation amount 5 and the positional data 7 of the magnetic head when there is no positional deviation, performs calculations such as addition and subtraction, and outputs corrected positional data 9.
そのデータにより、磁気ヘッド駆動回路１０は磁気ヘッ
ド送り機構１１を駆動して、磁気ヘッド交換等により生
じた位置ずれ量を補正して正しく磁気ヘッド２の位置ぎ
めを行なう。Based on the data, the magnetic head drive circuit 10 drives the magnetic head feeding mechanism 11 to correct the amount of positional deviation caused by replacing the magnetic head, etc., and correctly positions the magnetic head 2.
以上説明したごとく本発明による装置によれば従来、磁
気ヘッド交換等の際には、機械的に磁気ヘッドを前後に
微動させ、位置調整を行なっていたが、数字スイッチに
ずれ量を設定するだけで済む様になった。As explained above, according to the device according to the present invention, conventionally, when replacing the magnetic head, the position was adjusted by mechanically moving the magnetic head back and forth slightly, but instead of simply setting the amount of deviation on the numerical switch. Now I can get away with it.
これに伴い、従来、機械的には２μｍ位の調整精度しか
得られなかったのが最大限位置ずれの検出精度まで上げ
ることができるようになった。Along with this, it has become possible to increase the accuracy of positional deviation detection to the maximum, whereas previously mechanical adjustment accuracy could only be obtained at around 2 μm.
位置ずれ検出にヘリウム・ネオンレーザを用いれば約０
．１６μ凡の精度である。Approximately 0 if a helium/neon laser is used to detect positional deviation.
．． The accuracy is about 16μ.
添付図は本発明による磁気ヘッド位置ぎめ装置の一実施
例を示す図である。
１：磁気ディスク、２：磁気ヘッド、３：レーザ沖展器
、４二測長値表示器、５：位置ずれ量、６：数字スイッ
チ、７：位置データ、８：小形中央処理装置、９：修正
位置データ、１０：磁気ヘッド駆動回路、１１：磁気ヘ
ッド送り機構。The attached drawing shows an embodiment of a magnetic head positioning device according to the present invention. 1: Magnetic disk, 2: Magnetic head, 3: Laser spreader, 42 Length measurement value display, 5: Positional deviation amount, 6: Numerical switch, 7: Position data, 8: Small central processing unit, 9: Correction position data, 10: magnetic head drive circuit, 11: magnetic head feeding mechanism.
Claims (1)
気ヘッドの位置を測定するレーザ測長器と、この測長器
を表示する表示器と、初期設定位置からの磁気ヘッドの
位置ずれ量を設定する数字スイッチと、この位置ずれ量
と前記初期設定位置ぎめデータとから、磁気ヘッドの位
置ずれを補正した位置ぎめデータを算出する小形中央処
理装置とを有し、磁気ヘッドの位置ずれを電子的に補正
して位置ぎめを行なうことを特徴とする磁気ヘッド位置
ぎめ装置。1. A magnetic head feeding mechanism, a means for driving the same, a laser length measuring device for measuring the position of the magnetic head, a display for displaying this length measuring device, and a means for measuring the positional deviation of the magnetic head from the initial setting position. It has a numerical switch to be set, and a small central processing unit that calculates positioning data that corrects the positional deviation of the magnetic head from this positional deviation amount and the initial setting positioning data. A magnetic head positioning device characterized by performing positioning by correcting the position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2155377A JPS5845111B2 (en) | 1977-03-02 | 1977-03-02 | magnetic head positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2155377A JPS5845111B2 (en) | 1977-03-02 | 1977-03-02 | magnetic head positioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53107805A JPS53107805A (en) | 1978-09-20 |
| JPS5845111B2 true JPS5845111B2 (en) | 1983-10-07 |
Family
ID=12058183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2155377A Expired JPS5845111B2 (en) | 1977-03-02 | 1977-03-02 | magnetic head positioning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5845111B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58199209A (en) * | 1982-05-17 | 1983-11-19 | Nippon Air Brake Co Ltd | Air spring for car |
| JPS637567Y2 (en) * | 1986-11-12 | 1988-03-04 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6032168A (en) * | 1983-08-03 | 1985-02-19 | Hitachi Ltd | Feeding device |
| US5886787A (en) * | 1995-12-15 | 1999-03-23 | Hewlett-Packard Company | Displacement sensor and method for producing target feature thereof |
| US5812266A (en) * | 1995-12-15 | 1998-09-22 | Hewlett-Packard Company | Non-contact position sensor |
| US6459492B1 (en) | 1997-03-14 | 2002-10-01 | Agilent Technologies, Inc. | Non-contact position sensor |
-
1977
- 1977-03-02 JP JP2155377A patent/JPS5845111B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58199209A (en) * | 1982-05-17 | 1983-11-19 | Nippon Air Brake Co Ltd | Air spring for car |
| JPS637567Y2 (en) * | 1986-11-12 | 1988-03-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53107805A (en) | 1978-09-20 |
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