JPH0248980B2 - - Google Patents
Info
- Publication number
- JPH0248980B2 JPH0248980B2 JP57040779A JP4077982A JPH0248980B2 JP H0248980 B2 JPH0248980 B2 JP H0248980B2 JP 57040779 A JP57040779 A JP 57040779A JP 4077982 A JP4077982 A JP 4077982A JP H0248980 B2 JPH0248980 B2 JP H0248980B2
- Authority
- JP
- Japan
- Prior art keywords
- head
- burnishing
- recording medium
- protrusions
- magnetic disk
- 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
- 238000007689 inspection Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 1
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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
Description
【発明の詳細な説明】
発明の対象
本発明は磁気記録媒体の検査方法に関し、特に
磁気デイスク媒体表面の平滑性検査方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention The present invention relates to a method for inspecting a magnetic recording medium, and more particularly to a method for inspecting the smoothness of a surface of a magnetic disk medium.
従来技術
磁気デイスク装置では、磁気ヘツドが、磁気デ
イスク媒体の回転による空気流により媒体表面か
ら微小なすきまを保つて浮上量する。この場合、
磁気デイスク媒体表面に媒体自体の突起物あるい
は外部から付着した塵埃等の異物が存在すると、
磁気ヘツドが損傷したり、磁気ヘツド表面に異物
が付着物したりする。また、磁気ヘツドの浮動の
安定性が損なわれるため、クラツシユの原因にも
なる。BACKGROUND OF THE INVENTION In a magnetic disk drive, a magnetic head flies by airflow caused by the rotation of a magnetic disk medium while maintaining a small gap from the surface of the medium. in this case,
If there are foreign objects such as protrusions from the medium itself or dust attached from the outside on the surface of the magnetic disk medium,
The magnetic head may be damaged or foreign matter may adhere to the surface of the magnetic head. Furthermore, the floating stability of the magnetic head is impaired, which may cause crashes.
このため磁気デイスクの製造工程には、バニツ
シング用ヘツドを用いて媒体表面の突出物をでき
る限り除去する工程と、浮上保証スペーシングで
磁気ヘツドが媒体表面に衝突しないことを確認す
るフローテイングチエツク工程が必要となる。然
るに従来の製造方法によれば、バニツシング用ヘ
ツドとフローテイングチエツク用ヘツドとを夫々
キヤリツジ・駆動モータから成る別々の走査機構
に取付け、先ずバニツシング用ヘツドを用いてデ
イスク媒体表面の突起物等を除去し、次いでチエ
ツク用ヘツドによる検査を行なつていた。この場
合、バニツシングとチエツクは磁気デイスク媒体
全域に渡り交互に繰返して行なわれ、チエツク中
に磁気ヘツドと磁気デイスク媒体との衝突が発生
すると、衝突発生箇所以外の媒体表面に対しても
再度バニツシンを行なうようにしていた。このた
め磁気デイスク１枚当りのフローテイングチエツ
クに長時間を要し、また、バニツシングしてから
チエツク迄の間にテスター内の塵埃等がデイスク
媒体の表面に付着し易いため、これらが媒体突起
の正確なチエツクの妨げとなる等の問題があつ
た。 For this reason, the manufacturing process for magnetic disks includes a process to remove as much protrusion from the medium surface as possible using a burnishing head, and a floating check process to confirm that the magnetic head will not collide with the medium surface using floating guarantee spacing. Is required. However, according to the conventional manufacturing method, the burnishing head and the floating check head are each attached to separate scanning mechanisms consisting of a carriage and a drive motor, and the burnishing head is first used to remove protrusions on the surface of the disk medium. Then, an inspection was performed using a check head. In this case, burnishing and checking are performed alternately over the entire area of the magnetic disk medium, and if a collision occurs between the magnetic head and the magnetic disk medium during the check, burnishing is performed again on the medium surface other than the location where the collision occurred. I was trying to do it. For this reason, it takes a long time to perform a floating check on each magnetic disk, and the dust inside the tester tends to adhere to the surface of the disk medium between the time of burnishing and the time of the check. There were problems such as hindering accurate checking.
発明の目的
本発明の目的は上述した従来の問題点を解決
し、バニツシングとチエツクを効率よく短時間で
行なえるようにした記録媒体検査方法を提供する
ことにある。OBJECTS OF THE INVENTION It is an object of the present invention to provide a recording medium inspection method that solves the above-mentioned conventional problems and allows burnishing and checking to be performed efficiently and in a short time.
発明の総括的説明
上記目的を達成するため、本発明ではバニツシ
ング用のヘツドと検査用ヘツドとを同一の走査機
構に取りつけ、該走査機構を動作させることによ
つて記録媒体表面の突起物除去とその検査とを同
時に行なうようにしたことを特徴とする。General Description of the Invention In order to achieve the above object, the present invention includes a burnishing head and an inspection head that are attached to the same scanning mechanism, and the scanning mechanism is operated to remove protrusions on the surface of a recording medium. The present invention is characterized in that the inspection is performed at the same time.
発明の実施例
以下、本発明の一実施例を図面により説明す
る。第１図において、１はヘツド走査用のガイド
アームであり、バニツシング用ヘツド２とチエツ
ク用ヘツド３が取り付けられる。取付位置は２つ
のヘツドの流出部が磁気デイスクの同一半径位置
になるように設定する。ヘツドコアのスライダー
幅は、バニツシング領域がチエツク領域よりも狭
くならないように、バニツシング用ヘツドコア２
のスライダ幅をチエツク用ヘツド３のスライダー
幅以上とする。また、チエツク用ヘツド３は浮上
保証スペーシングに、バニツシング用ヘツド２は
チエツク用ヘツドのスペーシング以下に、バネ荷
重等の調整により設定する。バニツシング用ヘツ
ドとチエツク用ヘツドの取付はどちらが磁気デイ
スク媒体の回転の前方でもよい。Embodiment of the Invention An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a guide arm for head scanning, to which a burnishing head 2 and a checking head 3 are attached. The mounting position is set so that the outflow portions of the two heads are at the same radial position of the magnetic disk. The head core slider width is set so that the burnishing area is not narrower than the check area.
The slider width of the check head 3 is set to be greater than or equal to the slider width of the check head 3. Furthermore, the checking head 3 is set to a spacing that guarantees flying, and the burnishing head 2 is set to a spacing equal to or less than that of the checking head by adjusting the spring load, etc. The burnishing head and the checking head may be mounted on either side in front of the rotation of the magnetic disk medium.
第２図、第３図は本発明のフローテイングチエ
ツク方法の一実施例である。ガイドアーム１に
は、磁気デイスク媒体４の回転の順に、バニツシ
ング用ヘツド２，２′とチエツク用ヘツド３，
３′が取付けられ、駆動モータ６によりキヤリツ
ジ５を介して、磁気デイスク媒体４の半径方向に
移動する。第１図で示したように２つのヘツドは
流出端が磁気デイスクの同一半径になるように設
定され、本図では磁気デイスク媒体の中心線から
それぞれｄ＝d′離れ、半径Ｒ上に位置する。 FIGS. 2 and 3 show an embodiment of the floating check method of the present invention. The guide arm 1 is provided with burnishing heads 2 and 2' and checking heads 3 and 3 in the order of rotation of the magnetic disk medium 4.
3' is attached and is moved in the radial direction of the magnetic disk medium 4 via the carriage 5 by a drive motor 6. As shown in Figure 1, the two heads are set so that their outflow ends are at the same radius of the magnetic disk, and in this figure, they are each located at a distance d=d' from the center line of the magnetic disk medium and on the radius R. .
フローテイングチエツクはまず、バニツシング
用ヘツド２，２′とチエツク用ヘツド３，３′が同
時に磁気デイスク媒体４にロードし、磁気デイス
ク媒体４上を同時に走査する。磁気デイスク媒体
４は内周もしくは外周から順に、トラツク毎にバ
ニツシング用ヘツド２によりバニツシングされた
直後にチエツク用ヘツド３により、突出物の有無
をチエツクされる。本図では磁気デイスク媒体の
半径Ｒの位置をバニツシング、チエツク中であ
る。 In the floating check, the burnishing heads 2, 2' and the checking heads 3, 3' simultaneously load onto the magnetic disk medium 4 and scan the magnetic disk medium 4 simultaneously. Immediately after the magnetic disk medium 4 is burnished by the burnishing head 2 for each track from the inner circumference or the outer circumference, the presence or absence of protrusions is checked by the check head 3. In this figure, the position of the radius R of the magnetic disk medium is being burnished and checked.
このときチエツク用ヘツド３，３′が突出物を
検知した場合、ヘツドは検知したトラツクの前後
を高速で指定回数往復し、追バニツシングをした
のち再チエツクする。本図の場合、半径Ｒの位置
の前後をＡ＝A′の振幅で３往復シークしている。 At this time, if the checking heads 3, 3' detect a protruding object, the heads reciprocate at high speed in front of and behind the detected track a specified number of times, perform burnishing, and then check again. In the case of this figure, three reciprocating seeks are performed before and after the position of radius R with an amplitude of A=A'.
このようにして磁気デイスク媒体の全域をチエ
ツク後、バニツシング用ヘツド２，２′とチエツ
ク用ヘツド３，３′を同時にアンロードし、フロ
ーテイングテストは終了する。 After checking the entire area of the magnetic disk medium in this manner, the burnishing heads 2, 2' and the checking heads 3, 3' are simultaneously unloaded, and the floating test is completed.
本実施例によれば、チエツクにより検知された
磁気デイスク媒体の突出物がある部分を、一式の
ヘツド走査機構いよつて重点的にバニツシングで
きるという効果がある。 According to this embodiment, there is an advantage that the part of the magnetic disk medium where the protrusion detected by the check is located can be intensively burnished using a set of head scanning mechanisms.
本実施例に於いては１つのガイドアーム１にバ
ニツシング用ヘツド２とチエツク用ヘツド３を取
付けた例を示しているが、別々のガイドアームに
バニツシング用ヘツド２とチエツク用ヘツド３を
それぞれ取付け１つのキヤリツジ５に両方のヘツ
ドを取付けることにより、全く同一の効果を得ら
れる。 This embodiment shows an example in which the burnishing head 2 and the check head 3 are attached to one guide arm 1, but it is also possible to attach the burnishing head 2 and the check head 3 to separate guide arms. By mounting both heads on one carriage 5, exactly the same effect can be obtained.
発明の効果
以上の説明から明らかな如く、本発明によれ
ば、キヤリツジ・駆動モータから成る一式の走査
機構により、バニツシング用ヘツドとチエツク用
ヘツドを走査できるので、バニツシング用ヘツド
の走査機構およびバニツシング用ヘツドとチエツ
ク用ヘツド間の複雑なシーケンス制御とすること
なしに簡単に、磁気デイスク媒体の同一位置をバ
ニツシングしながらチエツクできる。Effects of the Invention As is clear from the above description, according to the present invention, the burnishing head and the check head can be scanned by a set of scanning mechanisms consisting of a carriage and a drive motor. It is possible to easily check the same position on a magnetic disk medium while performing burnishing without having to perform complicated sequence control between the head and the checking head.
また同一ガイドアームにバニツシング用ヘツド
とチエツクヘツドが近接して取付けてあり、バニ
ツシング直後にチエツクすることができるので、
周囲の塵埃等が磁気デイスク媒体に付着して、突
出物となりチエツクの妨げとなる確率が小さくな
るという効果がある。 In addition, the burnishing head and check head are mounted close to each other on the same guide arm, making it possible to check immediately after burnishing.
This has the effect of reducing the probability that surrounding dust and the like will adhere to the magnetic disk medium and become protrusions that will interfere with checking.
第１図はバニツシング、チエツク兼用ヘツドの
平面図、第２図、第３図はそれぞれ記録媒体と走
査機構との関係を示す平面図および側面図であ
る。
１……ガイドアーム、２，２′……バニツシン
グ用ヘツド、３，３′……チエツク用ヘツド、４
……磁気デイスク媒体、５……キヤリツジ、６…
…駆動モータ。
FIG. 1 is a plan view of the burnishing and checking head, and FIGS. 2 and 3 are a plan view and a side view showing the relationship between the recording medium and the scanning mechanism, respectively. 1... Guide arm, 2, 2'... Vanishing head, 3, 3'... Checking head, 4
...Magnetic disk medium, 5...Carriage, 6...
...Drive motor.
Claims (1)
や付着物等の突出物を除去し、次いで検査ヘツド
により所定高さ以上の突出物があるかどうかをチ
エツクする記録媒体の検査方法において、バニツ
シングヘツドと該バニツシングヘツドよりも幅が
狭くかつバニツシングヘツドよりも記録媒体から
の浮上量が大きい検査ヘツドとを前記記録媒体の
同一トラツクに位置するように保持し、これらの
ヘツドを前記記録媒体の異なるトラツク位置に移
動させる走査機構を用意し、前記記録媒体を回転
せしめ、前記走査機構により前記バニツシングヘ
ツドと検査ヘツドを前記記録媒体の半径方向に移
動せしめることにより、突出物のバニツシングと
所定高さ以上の突出物の有無のチエツクを行い、
前記検査ヘツドにより所定高さ以上の突出物が検
出されたとき前記バニツシングヘツドおよび検査
ヘツドを当該トラツクの前後数トラツクを所定回
数往復移動せしめて追いバニツシユを行つた後、
所定高さ以上の突出物の有無を検査することを特
徴とする記録媒体の検査方法。1 Burnishing is a recording medium inspection method that uses a burnishing head to remove protrusions, deposits, and other protrusions on the surface of the medium, and then uses an inspection head to check whether there are protrusions of a predetermined height or higher. The head and the inspection head, which is narrower in width than the burnishing head and has a greater flying height from the recording medium than the burnishing head, are held so as to be located on the same track of the recording medium, and these heads are A scanning mechanism for moving the recording medium to different track positions is provided, the recording medium is rotated, and the scanning mechanism moves the burnishing head and the inspection head in the radial direction of the recording medium, thereby detecting protrusions. Performs burnishing and checks for the presence of protrusions over a specified height.
When a protrusion of a predetermined height or more is detected by the inspection head, the burnishing head and the inspection head are reciprocated a predetermined number of times before and after the track concerned, and then follow-up burnishing is performed.
A method for inspecting a recording medium, comprising inspecting for the presence or absence of a protrusion of a predetermined height or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4077982A JPS58159241A (en) | 1982-03-17 | 1982-03-17 | Checking method of recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4077982A JPS58159241A (en) | 1982-03-17 | 1982-03-17 | Checking method of recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58159241A JPS58159241A (en) | 1983-09-21 |
| JPH0248980B2 true JPH0248980B2 (en) | 1990-10-26 |
Family
ID=12590107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4077982A Granted JPS58159241A (en) | 1982-03-17 | 1982-03-17 | Checking method of recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58159241A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61271622A (en) * | 1985-05-28 | 1986-12-01 | Hitachi Ltd | Mechanism for removing residue for burnishing |
| JPH067478Y2 (en) * | 1988-06-06 | 1994-02-23 | セイコー精機株式会社 | Disc clamp structure of disc inspection device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113869A (en) * | 1981-12-28 | 1983-07-06 | Fujitsu Ltd | Inspecting apparatus for medium of magnetic record |
-
1982
- 1982-03-17 JP JP4077982A patent/JPS58159241A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113869A (en) * | 1981-12-28 | 1983-07-06 | Fujitsu Ltd | Inspecting apparatus for medium of magnetic record |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58159241A (en) | 1983-09-21 |
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