JPH02177169A - Magnetic recording head - Google Patents
Magnetic recording headInfo
- Publication number
- JPH02177169A JPH02177169A JP33240788A JP33240788A JPH02177169A JP H02177169 A JPH02177169 A JP H02177169A JP 33240788 A JP33240788 A JP 33240788A JP 33240788 A JP33240788 A JP 33240788A JP H02177169 A JPH02177169 A JP H02177169A
- Authority
- JP
- Japan
- Prior art keywords
- head
- resonance
- gimbal
- magnetic recording
- effective
- 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
- 238000013016 damping Methods 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 229920006267 polyester film Polymers 0.000 abstract description 6
- 229910000906 Bronze Inorganic materials 0.000 abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 5
- 239000010974 bronze Substances 0.000 abstract description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 229920002063 Sorbothane Polymers 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Supporting Of Heads In Record-Carrier Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
フロッピィディスク装置等に用いられる磁気記録ヘッド
に関し、
特に動摩擦係数のアップに伴い発生するヘッド共振を制
振するような磁気記録ヘッドを提供することを目的とし
、
磁気ヘットがジンバルを介してキャリッジに固定されて
なる磁気記録ヘッドであって、前記ジンバル部に高周波
帯域に効果のある制振材と共に、低周波帯域に効果のあ
る制振材を貼って構成する。[Detailed Description of the Invention] [Summary] Regarding a magnetic recording head used in a floppy disk device, etc., an object of the present invention is to provide a magnetic recording head that suppresses head resonance that occurs as a result of an increase in the coefficient of dynamic friction. A magnetic recording head in which a magnetic head is fixed to a carriage via a gimbal, and is configured by pasting a damping material effective in a high frequency band and a damping material effective in a low frequency band on the gimbal part. .
本発明はフロッピィディスク装置等に用いられる磁気記
録ヘッドに関する。The present invention relates to a magnetic recording head used in floppy disk devices and the like.
最近の磁気記録では、記録密度のアップが図られており
、そのためへフロッピィディスク装置の磁気記録ヘット
の記録媒体に対する接触面圧がアップする傾向にある。In recent magnetic recording, attempts have been made to increase the recording density, which has tended to increase the contact pressure of the magnetic recording head of a floppy disk device with the recording medium.
そうなると、記録媒体と磁気記録ヘット間の静／動摩擦
係数がアップし、特に動摩擦係数のアップに伴いヘッド
共振（高周波数：２〜６ＫＨｚ、低周波数：２００〜４
００Ｈｚ）が発生し、リード／ライト・エラーとなるた
め、ヘッドの共振が制振できるようなものが要望されて
いる。In this case, the static/dynamic friction coefficient between the recording medium and the magnetic recording head increases, and in particular, as the dynamic friction coefficient increases, head resonance (high frequency: 2 to 6 kHz, low frequency: 200 to 4 kHz) increases.
00 Hz), resulting in a read/write error, so there is a need for something that can suppress the resonance of the head.
従来のフロッピィディスク装置の概略図を第３図に示す
。A schematic diagram of a conventional floppy disk device is shown in FIG.
第３図において、１は記録媒体（フロッピィディスク）
で、チャッキングハブ２に固定され、モータのロータ３
により回転される。記録媒体１の情報をリード／ライト
するための磁気ヘッド４が、ジンバル５を介してキャリ
ッジ６に固定されている。さらに、ｆｉｍ気ヘッド４は
記録媒体１に加圧バネ７により圧接されている（図では
磁気ヘッド４が記録媒体１の両面に配置されている）。In Figure 3, 1 is a recording medium (floppy disk)
It is fixed to the chucking hub 2, and the rotor 3 of the motor
Rotated by A magnetic head 4 for reading/writing information on a recording medium 1 is fixed to a carriage 6 via a gimbal 5. Furthermore, the magnetic head 4 is pressed against the recording medium 1 by a pressure spring 7 (in the figure, the magnetic head 4 is arranged on both sides of the recording medium 1).
なお、８はステンビングモータで、８亥モータ８により
キャリッジ６はスライド軸９上を移動して、磁気ヘッド
４を所望トラックに位置決めする。１０はメーンフレー
ム、ｉｔは回路基板である。8 is a stevening motor, and the carriage 6 is moved on a slide shaft 9 by the motor 8 to position the magnetic head 4 on a desired track. 10 is a main frame, and IT is a circuit board.
第４図は磁気記録ヘッドの説明図である。FIG. 4 is an explanatory diagram of the magnetic recording head.
第４図において、ジンバル５の外周部はキャリッジ６に
固定され、中央部で磁気ヘッド４を固定し、さらに、キ
ャリッジ６に図示しない突起を持ち、その突起により磁
気ヘッド４の中央をシンバル５の裏側から押圧している
。In FIG. 4, the outer peripheral part of the gimbal 5 is fixed to a carriage 6, and the magnetic head 4 is fixed at the central part.The carriage 6 also has a projection (not shown) that connects the center of the magnetic head 4 to the cymbal 5. It's pressed from the back.
〔発明が解決しようとする課題〕
最近のフロッピィディスク装置（ＦＤＤ）は、記録密度
のアップ（２〜６万８ＰＩ）が図られており、トラック
幅が狭くなるに伴いそれに対応した磁気ヘッド４のギャ
ップ長さ（ＧＬ）は、記録密度が１万８ＰＩで１．５μ
ｍであったものが、４万８ＰＩで０．３μｍと狭くなり
、それに伴い記録媒体の表面粗さも０．２μｍから０．
１μｍと小さくなる。また、磁気へラド４の記録媒体１
に対する接触面圧（Ｉｇ／ｍｍ２以上）もアップする結
果、記録媒体１と磁気ヘッド４間の静／動摩擦係数がア
ップし、特に動摩擦係数のアップに伴いヘッド共振（高
周波数：２〜６ＫＨｚ、低周波数＝２００〜４００Ｈｚ
）が発生し、リード／ライト・エラーとなる問題が生じ
ている。[Problem to be solved by the invention] Recent floppy disk drives (FDD) are designed to increase the recording density (20,000 to 68,008 PI), and as the track width becomes narrower, the magnetic head 4 has to be adjusted to accommodate this narrower track width. The gap length (GL) is 1.5 μ at a recording density of 10,008 PI.
m, but it became narrower to 0.3 μm at 40,088 PI, and the surface roughness of the recording medium also decreased from 0.2 μm to 0.3 μm.
It becomes as small as 1 μm. In addition, the recording medium 1 of the magnetic herad 4
As a result, the static/dynamic friction coefficient between the recording medium 1 and the magnetic head 4 increases, and in particular, as the dynamic friction coefficient increases, head resonance (high frequency: 2 to 6 KHz, low Frequency = 200-400Hz
) has occurred, causing a read/write error problem.
そこで、本発明は特に動摩擦係数のアップに伴い発生す
るヘッド共振を制振するような磁気記録ヘッドを提供す
ることを目的とする。Therefore, it is an object of the present invention to provide a magnetic recording head that suppresses head resonance that occurs particularly as the coefficient of dynamic friction increases.
前記問題点は、第１図（イ）（ロ）に示されるように、
磁気ヘッド４がジンバル５を介してキャリッジ６に固定
されてなる磁気記録ヘッドであって、前記ジンバル５部
に、ソルボセンイ
の高周波帯域に効果のある制振材１２と共に、ポリエス
テルフィルム及び薄い銅板等の低周波帯域に効果のある
制振材１３を貼った本発明の磁気記録ヘッドによって解
決される。The above problem, as shown in Figure 1 (a) and (b),
This is a magnetic recording head in which a magnetic head 4 is fixed to a carriage 6 via a gimbal 5, and the gimbal 5 is made of a material such as a polyester film or a thin copper plate along with a damping material 12 that is effective in the high frequency band of Sorbosen. This problem is solved by the magnetic recording head of the present invention, which is coated with a damping material 13 that is effective in low frequency bands.
（作用〕
即ち、記録密度のアップによりヘッド共振は高周波数２
〜６ＫＨ２と低周波数２００〜４００Ｈｚで発生してい
るので、本発明では高周波帯域で効果のある制振材１２
と低周波帯域で効果のある制振材１３をジンバル５部に
直接共に貼り、ヘッド共振を吸収している。(Effect) In other words, due to the increase in recording density, the head resonance becomes higher frequency 2
~6KH2, which occurs at a low frequency of 200 to 400Hz, so in the present invention, vibration damping material 12 that is effective in the high frequency band is used.
A damping material 13, which is effective in the low frequency band, is attached directly to the gimbal 5 to absorb head resonance.
高周波帯域の制振材１２として、装置の使用環境下（０
〜６０’Ｃ）において充分な制振能力を持ったソルボセ
ンイ及びゲル（Ｇｅｌ）等を用いたが、この制振材１２
は低周波帯域で効果がないため、低周波対策の制振材１
３として、ポリエステルフィルム及び薄い銅板（リン青
銅）−５０μｍを一緒に用いた。As the vibration damping material 12 in the high frequency band, under the usage environment of the device (0
Solubosene and Gel, which have sufficient damping ability at temperatures up to 60'C), were used; however, this damping material 12
is not effective in the low frequency band, so vibration damping material 1 for low frequency countermeasures is used.
As No. 3, a polyester film and a thin copper plate (phosphor bronze) of 50 μm were used together.
その結果、高記録密度により発生するヘッド共振を防ぐ
ことができ、リード／ライト・エラーの発生が防止でき
た。As a result, head resonance caused by high recording density could be prevented, and read/write errors could be prevented.
本発明では、磁気ヘッド系の材料等を変更して前述の共
振周波数を避けることを検討したが、結局フロッピィデ
ィスクの別命的問題である磁気記録ヘッドと記録媒体が
接触しているために生じるものであり、そこで、高周波
数、低周波数のヘッド共振を制振させることを検討した
。In the present invention, we have considered changing the materials of the magnetic head system to avoid the above-mentioned resonance frequency, but in the end, it is caused by the contact between the magnetic recording head and the recording medium, which is a separate problem of floppy disks. Therefore, we investigated ways to suppress high-frequency and low-frequency head resonance.
最初は高周波帯域の制振材としであるブチルゴム、天然
ゴム、シリコンゴム、ハイダンピングゴム、ソルボセン
イ、Ｇｅｌ、その他を考え、直接ジンバル部に貼り、磁
気記録ヘッドを制振させることにした。At first, we considered butyl rubber, natural rubber, silicone rubber, high damping rubber, Solbothene, Gel, and other materials as vibration damping materials for high frequency bands, and decided to attach them directly to the gimbal to damp the vibrations of the magnetic recording head.
しかし、制振材の制振能力は第２図に示すように環境温
度により異なることが判明した。そこで本発明では、図
示のようにフロッピィディスク装置の使用環境下（０〜
６０″Ｃ）において充分な制振能力を持ったソルボセン
イ及びゲル（Ｇｅｌ）の制振材を磁気記録ヘッドのジン
バル上に貼り、高周波帯域のヘッド共振を制振した。し
かし、このソルボセンイ及びゲル（Ｇｅｌ）の制振材は
、低周波帯域には効果がないため、低周波対策として、
ポリエステルフィルム及び薄い銅板（リン青銅）を−緒
に用いた。以下に実施例を示す。However, it was found that the damping ability of the damping material differs depending on the environmental temperature, as shown in FIG. Therefore, in the present invention, as shown in the figure, under the usage environment of the floppy disk device (0 to
A damping material made of solbothene and gel, which has sufficient vibration damping ability at 60"C), was pasted on the gimbal of the magnetic recording head to damp the head resonance in the high frequency band. However, this solbothene and gel ( Gel) damping material is not effective in low frequency bands, so as a low frequency countermeasure,
A polyester film and a thin copper plate (phosphor bronze) were used together. Examples are shown below.
第１図（イ）（ロ）は本発明の一実施例を説明する図で
あり、（イ）は平面図、（ロ）は側面図である。なお、
全図を通じて同一符号は同一対象物を示す。FIGS. 1A and 1B are diagrams illustrating an embodiment of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a side view. In addition,
The same reference numerals indicate the same objects throughout the figures.
第１図（イ）（ロ）は第３図のフロッピィディスク装置
のヘッド部分を示す。1(a) and 1(b) show the head portion of the floppy disk device of FIG. 3. FIG.
図において、ジンバル５の外周部はキャリッジ６に固定
され、中央部に磁気ヘッド４を固定し、さらに、キャリ
ッジ６に図示しない突起を持ち、その突起により磁気ヘ
ッド４を固定しているジンバル５の中央裏側を押圧して
いる。ヘッド共振を制振させるために、上記ジンバル５
上に直接制振材１２．１３を図示のように貼っている。In the figure, the outer periphery of the gimbal 5 is fixed to a carriage 6, the magnetic head 4 is fixed to the central part, and the carriage 6 has a protrusion (not shown) that fixes the magnetic head 4. Pressing the center back. In order to suppress head resonance, the gimbal 5
Damping materials 12 and 13 are pasted directly on top as shown.
割振材１２は高周波帯域で効果があるソルボセンイ及び
ゲル（Ｇｅｌ）等であり、その上に共に貼る制振材１３
は低周波対策のポリエステルフィルム及び薄い銅板（リ
ン青銅） ＝５０μｍ等である。The damping material 12 is a material such as solbothene or gel that is effective in a high frequency band, and the damping material 13 is attached thereon.
are a polyester film for low frequency protection, a thin copper plate (phosphor bronze) = 50 μm, etc.
以上のように構成したことにより、記録密度のアップに
より生じた特に動摩擦係数のアップに伴うヘッド共振の
うち、高周波帯域２〜６ＫＨｚはソルボセンイ及びゲル
（Ｇｅｌ）等で吸収され、低周波帯域の２００〜４００
Ｈｚはポリエステルフィルム及び薄い銅板（リン青銅）
等で吸収される。With the above configuration, among the head resonance caused by the increase in recording density, especially due to the increase in the coefficient of dynamic friction, the high frequency band of 2 to 6 kHz is absorbed by Sorbothene and gel, etc., and the low frequency band of 200 kHz is absorbed. ~400
Hz is polyester film and thin copper plate (phosphor bronze)
It is absorbed by etc.
なお、実施例では、ジンバル５上の直ぐ上に制振材１２
を、その上に制振材１３をそれぞれ貼っているが、これ
に限定せず制振材の貼る位置は上下反対でもよい。In the embodiment, the damping material 12 is placed directly above the gimbal 5.
, and the damping material 13 is pasted thereon, but the damping material 13 is not limited to this, and the position where the damping material is pasted may be upside down.
また、本発明による磁気記録ヘッドの制振効果は、その
他の磁気記録装置、例えば今後高記録密度化による低浮
上量（低浮上による空気の圧縮による磁気記録ヘッドへ
の突き上げ）の傾向であるハードディスク装置において
も、ヘッドが記録媒体に限りなく接近されるので、充分
フロンビイディスク装置と同様の制振効果が得られる。The vibration damping effect of the magnetic recording head according to the present invention can also be applied to other magnetic recording devices, such as hard disk drives, which will tend to have a lower flying height due to higher recording densities in the future (the compression of air caused by the lower flying height will push up the magnetic recording head). In this apparatus, since the head is brought as close as possible to the recording medium, a sufficient vibration damping effect similar to that of the Freonbi disk apparatus can be obtained.
以上説明したように本発明によれば、磁気記録ヘッドの
ジンバルに高周波帯域に効果のある制振材と低周波帯域
に効果のある制振材を共に貼ることにより、高記録密度
により発生するヘッド共振が制振でき、リード／ライト
エラーの発生が防止される効果は大きい。As explained above, according to the present invention, by pasting both a damping material that is effective in high frequency bands and a damping material that is effective in low frequency bands on the gimbal of a magnetic recording head, the head that occurs due to high recording density can be This has a great effect in suppressing resonance and preventing read/write errors from occurring.
図において、 ４は石■気ヘット、 ５はジンバル、 ６はキャリッジ、 １２は高周波帯域の制振材、In the figure, 4 is stone ■ ki het, 5 is the gimbal, 6 is a carriage, 12 is a vibration damping material for high frequency band;
第１図（イ）（ロ）は本発明の一実施例を説明する図、
第２図は本発明の制振材の制振能力の説明図、第３図は
フロッピィディスク装置の概略図、第４図は従来の磁気
記録ヘッドの説明図であるオご茫絹Ｑ−亥方巳イケｎ名
克明壬う図木光ロ月グ隼・ｊ語〕シ利振能力ｎ言克Ｕ列
図第 ２ 図
ｊｏ−２
４、硝気ヘフｒ
夕二ジンバ）しFigures 1 (a) and (b) are diagrams for explaining one embodiment of the present invention, Figure 2 is a diagram for explaining the vibration damping ability of the vibration damping material of the present invention, Figure 3 is a schematic diagram of a floppy disk device, Figure 4 is an explanatory diagram of a conventional magnetic recording head. Figure 2 jo-2 4.
Claims (1)
（６）に固定されてなる磁気記録ヘッドであって、 前記ジンバル（５）部に、高周波帯域に効果のある制振
材（１２）と共に、低周波帯域に効果のある制振材（１
３）を貼ったことを特徴とする磁気記録ヘッド。[Claims] A magnetic recording head in which a magnetic head (4) is fixed to a carriage (6) via a gimbal (5), the gimbal (5) having a control that is effective in a high frequency band. Along with the vibration material (12), there is also a vibration damping material (1) that is effective in low frequency bands.
3) A magnetic recording head characterized by pasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33240788A JPH02177169A (en) | 1988-12-28 | 1988-12-28 | Magnetic recording head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33240788A JPH02177169A (en) | 1988-12-28 | 1988-12-28 | Magnetic recording head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02177169A true JPH02177169A (en) | 1990-07-10 |
Family
ID=18254624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33240788A Pending JPH02177169A (en) | 1988-12-28 | 1988-12-28 | Magnetic recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02177169A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6967821B2 (en) * | 2001-07-10 | 2005-11-22 | Seagate Technology Llc | Head gimbal assembly including dampening for air bearing vibration |
| US7480120B2 (en) * | 2005-04-12 | 2009-01-20 | Hitachi Global Storage Technologies Netherlands B.V. | Apparatus and method for damping slider-gimbal coupled vibration of a hard disk drive |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621166A (en) * | 1985-06-27 | 1987-01-07 | Mitsubishi Electric Corp | Magnetic converter holding device for double face type flexible magnetic disk device |
| JPS62154380A (en) * | 1985-12-27 | 1987-07-09 | Toshiba Corp | Magnetic head device for floppy disk device |
| JPS62154381A (en) * | 1985-12-27 | 1987-07-09 | Toshiba Corp | Magnetic head device for floppy disk device |
-
1988
- 1988-12-28 JP JP33240788A patent/JPH02177169A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621166A (en) * | 1985-06-27 | 1987-01-07 | Mitsubishi Electric Corp | Magnetic converter holding device for double face type flexible magnetic disk device |
| JPS62154380A (en) * | 1985-12-27 | 1987-07-09 | Toshiba Corp | Magnetic head device for floppy disk device |
| JPS62154381A (en) * | 1985-12-27 | 1987-07-09 | Toshiba Corp | Magnetic head device for floppy disk device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6967821B2 (en) * | 2001-07-10 | 2005-11-22 | Seagate Technology Llc | Head gimbal assembly including dampening for air bearing vibration |
| US7480120B2 (en) * | 2005-04-12 | 2009-01-20 | Hitachi Global Storage Technologies Netherlands B.V. | Apparatus and method for damping slider-gimbal coupled vibration of a hard disk drive |
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