JPH0246512A - Thin film magnetic head - Google Patents
Thin film magnetic headInfo
- Publication number
- JPH0246512A JPH0246512A JP19591088A JP19591088A JPH0246512A JP H0246512 A JPH0246512 A JP H0246512A JP 19591088 A JP19591088 A JP 19591088A JP 19591088 A JP19591088 A JP 19591088A JP H0246512 A JPH0246512 A JP H0246512A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic pole
- coil
- thin film
- grounding
- terminal
- 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
- 239000010409 thin film Substances 0.000 title claims abstract description 22
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 239000010408 film Substances 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 abstract description 4
- 238000000605 extraction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/31—Structure or manufacture of heads, e.g. inductive using thin films
- G11B5/3109—Details
- G11B5/313—Disposition of layers
- G11B5/3143—Disposition of layers including additional layers for improving the electromagnetic transducing properties of the basic structure, e.g. for flux coupling, guiding or shielding
-
- 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
- G11B5/10—Structure or manufacture of housings or shields for heads
- G11B5/11—Shielding of head against electric or magnetic fields
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は薄膜磁気ヘッドに関し、特に磁極の帯電による
雑音信号の発生を防止する改良に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a thin film magnetic head, and more particularly to an improvement for preventing the generation of noise signals due to charging of magnetic poles.
（従来の技術） 従来の薄膜磁気ヘッドを図面を参照して説明する。(Conventional technology) A conventional thin film magnetic head will be explained with reference to the drawings.
第２図は従来の薄膜磁気ヘッドの構成を示す図で、（ａ
）は外観図である。同図において、８は非磁性材料製の
基板、９は絶縁膜で、該絶縁膜９の表面に磁極３、コイ
ル５およびコイル用引き出しパターン６を薄膜形成法で
形成してあり、コイル用引き出しパターン６はコイル５
とコイル用端子７に接続しである。第２図の（ｂ）は、
コイル５の中心軸を通るとともに磁極３の記録媒体対向
面と垂直な断面を示し、第２図の（ａ＞で示した磁極３
は上部磁極３１と下部磁ｆｉ３２とからなり、これらの
両磁極が絶縁スペーサ１０を介してコイル５を挟んでい
る。また磁極３、コイル５およびコイル用引き出しパタ
ーン６は第２図の（ｂ）に示した保護Ｍ１１で覆ってあ
り、表面にはコイル用端子７だけが露出している。この
コイル用端子７に図示していないリード線を接続し、コ
イル５へ記録信号を送り、あるいはコイル５からの再生
信号を取り出している。FIG. 2 is a diagram showing the configuration of a conventional thin-film magnetic head.
) is an external view. In the figure, 8 is a substrate made of a non-magnetic material, 9 is an insulating film, and a magnetic pole 3, a coil 5, and a coil drawer pattern 6 are formed on the surface of the insulating film 9 by a thin film forming method. Pattern 6 is coil 5
and is connected to the coil terminal 7. (b) in Figure 2 is
A cross section passing through the central axis of the coil 5 and perpendicular to the recording medium facing surface of the magnetic pole 3 is shown, and the cross section of the magnetic pole 3 indicated by (a>) in FIG.
consists of an upper magnetic pole 31 and a lower magnetic pole fi32, and these two magnetic poles sandwich the coil 5 with an insulating spacer 10 in between. Further, the magnetic pole 3, the coil 5, and the coil extraction pattern 6 are covered with a protection M11 shown in FIG. 2(b), and only the coil terminal 7 is exposed on the surface. A lead wire (not shown) is connected to this coil terminal 7 to send a recording signal to the coil 5 or to take out a reproduction signal from the coil 5.
（発明が解決しようとする課題）
しかしながら、上述した従来の薄膜磁気ヘッドには次の
ような問題点がある。(Problems to be Solved by the Invention) However, the conventional thin film magnetic head described above has the following problems.
すなわちコイル５と上部磁極３１あるいはコイル５と下
部磁極３２は絶縁スペーサ１０を介して静電的に結合し
ており、磁気ディスクなとの記録媒体の走行中これと共
に移動する空気か上部磁極３１あるいは下部磁極３２の
各記録媒体対向面と摩擦することによって該磁極が帯電
する。この帯電した磁極が金属膜製のような導電性の記
録媒体に接触すると、該記録媒体が通常アース電位にな
っているので、上記の磁極の帯ひている電荷が瞬時に移
動し、これによってコイル５に雑音信号か生しる。以上
のように、従来の薄膜磁気ヘッドでは磁極が帯電し、該
磁極とアース電位になっている導電性の記録媒体が接触
することによってコイルに雑音信号が生じるという問題
がある。That is, the coil 5 and the upper magnetic pole 31 or the coil 5 and the lower magnetic pole 32 are electrostatically coupled via the insulating spacer 10, and air that moves with the recording medium such as a magnetic disk or the upper magnetic pole 31 or the lower magnetic pole 32 is electrostatically coupled to each other via the insulating spacer 10. The lower magnetic pole 32 is charged by friction with each recording medium facing surface. When this charged magnetic pole comes into contact with a conductive recording medium such as one made of metal film, since the recording medium is normally at ground potential, the electric charge on the magnetic pole moves instantaneously. A noise signal is generated in the coil 5. As described above, the conventional thin film magnetic head has a problem in that the magnetic pole is charged and a noise signal is generated in the coil when the magnetic pole comes into contact with a conductive recording medium that is at ground potential.
本発明の目的は、磁極を接地するようにすることによっ
て該磁極の帯電を防ぐことができ、これにより、磁極と
アース電位になっている導電性の記録媒体が接触しても
コイルに雑音信号か生しない薄膜磁気ヘットを提供する
ことである。An object of the present invention is to prevent the magnetic pole from being charged by grounding the magnetic pole, so that even if the magnetic pole comes into contact with a conductive recording medium that is at ground potential, a noise signal is generated in the coil. It is an object of the present invention to provide a thin film magnetic head that does not deteriorate.
（課題を解決するための手段）
本発明の薄膜磁気ヘッドは上記の目的を達成するために
次の手段構成を有する。(Means for Solving the Problems) The thin film magnetic head of the present invention has the following means configuration to achieve the above object.
すなわち本発明の薄膜磁気ヘッドは、一端が磁極と接続
し他端には外部からの接地用リード線が接続される接続
部分を設けた導体を有するか、あるいは磁極の一部分に
接地用リード線との接続部分を設けたことを特徴とする
ものである。In other words, the thin-film magnetic head of the present invention has a conductor with a connection part connected to a magnetic pole at one end and a grounding lead wire from the outside at the other end, or a conductor having a connecting part connected to a grounding lead wire from the outside on a part of the magnetic pole. It is characterized by having a connecting part.
（作 用）
以下、上記の手段構成を有する本発明の薄膜磁気ヘッド
の作用を説明する。(Function) Hereinafter, the function of the thin film magnetic head of the present invention having the above-described means will be explained.
本発明の薄膜磁気ヘットは、一端が磁極と接続し他端に
は外部からの接地用リード線が接続される接続部分を設
けた導体を有しているか、あるいは磁極の一部分に接地
用リート線との接続部分を設けている。したがって、こ
れらの接続部分に外部からの接地用リード線を接続する
ことにより磁極から電荷がアースの方へ移動してしまう
ので、磁極が帯電しなくなる。これによって、該磁極と
アース電位になっている導電性の記録媒体か接触しても
この接触時に電荷が移動しないので、コイルに雑音信号
を生ずることがなくなる。The thin film magnetic head of the present invention has a conductor having one end connected to a magnetic pole and the other end provided with a connection part to which an external grounding lead wire is connected, or a grounding lead wire is connected to a part of the magnetic pole. A connection part is provided. Therefore, by connecting an external grounding lead wire to these connecting portions, the electric charge moves from the magnetic pole toward the ground, so that the magnetic pole is no longer charged. As a result, even if the magnetic pole comes into contact with a conductive recording medium that is at ground potential, no charge is transferred at the time of this contact, so that no noise signal is generated in the coil.
（実 施 例）
以下に本発明の薄膜磁気ヘッドの実施例を図面を用いて
説明する。(Example) Examples of the thin film magnetic head of the present invention will be described below with reference to the drawings.
第１図は本発明の薄膜磁気ヘッドの実施例を示す図であ
る。磁極３、コイル５、コイル用引き出しパターン６、
コイル用端子７、基板８および絶縁膜９は先に述へた従
来の薄膜磁気ヘッドの構成と同じである。本実施例では
コイル用端子７の隣に磁極接地用端子２を設け、該磁極
接地用端子２と磁極３とを磁極接地用引き出しパターン
１が電気的に接続している。磁極接地用引き出しパター
ン１は磁極３と同様に薄膜形成法で形成している。FIG. 1 is a diagram showing an embodiment of the thin film magnetic head of the present invention. Magnetic pole 3, coil 5, coil extraction pattern 6,
The coil terminal 7, substrate 8, and insulating film 9 have the same structure as the conventional thin film magnetic head described above. In this embodiment, the magnetic pole grounding terminal 2 is provided next to the coil terminal 7, and the magnetic pole grounding terminal 2 and the magnetic pole 3 are electrically connected by the magnetic pole grounding extraction pattern 1. The magnetic pole grounding extraction pattern 1 is formed by the thin film forming method similarly to the magnetic pole 3.
磁極接地用端子２には、実施例の薄膜磁気ヘッドを実装
している装置のアース端子に連なるリード線（本図では
図示していない）を接続する。A lead wire (not shown in the figure) connected to the ground terminal of the device in which the thin film magnetic head of the embodiment is mounted is connected to the magnetic pole grounding terminal 2.
このようにしたことにより磁極３から電荷がアースの方
へ移動してしまうので、磁極３が帯電しなくなる。これ
によって、該磁極３とアース電位になっている導電性の
記録媒体が接触してもこの接触時に電荷が移動しないの
で、コイル５に雑音信号を生ずることがなくなる。By doing this, the charge moves from the magnetic pole 3 toward the ground, so that the magnetic pole 3 is no longer charged. As a result, even if the magnetic pole 3 and a conductive recording medium at ground potential come into contact, no charge is transferred at the time of this contact, so that no noise signal is generated in the coil 5.
本実施例では、磁極３が磁極接地用引き出しパターン１
と磁極接地用端子２を介して接地されるようにしである
が、磁１ｆ３の一部分に外部からの接地用リード線との
接続部分を設けて上記の磁極３を接地する構成も容易に
具体化できる。In this embodiment, the magnetic pole 3 is connected to the magnetic pole grounding lead pattern 1.
Although the magnetic pole 3 is grounded via the magnetic pole grounding terminal 2, a configuration in which the magnetic pole 3 is grounded by providing a connection part with an external grounding lead wire in a part of the magnetic 1f3 can also be easily realized. can.
（発明の効果）
以上説明したように、本発明の薄膜磁気ヘッドは、一端
が磁極と接続し他端には外部からの接地用リード線が接
続される接続部分を設けた導体を有するか、あるいは磁
極の一部分に接地用リード線との接続部分を設けるよう
にしたことによって、磁極を接地して帯電させないよう
にすることができるので、該磁極とアース電位になって
いる導電性の記録媒体が接触してもこの接触時に電荷の
移動がなくなりコイルに雑音信号が生じないようにする
ことができるという利点を有する。(Effects of the Invention) As explained above, the thin film magnetic head of the present invention has a conductor having a connection portion at one end connected to a magnetic pole and at the other end connected to an external grounding lead wire. Alternatively, by providing a part of the magnetic pole with a connecting part to the grounding lead wire, the magnetic pole can be grounded and not charged, so that a conductive recording medium that is at ground potential with the magnetic pole can be used. This has the advantage that even if the coils come into contact, there is no movement of charge at the time of contact, so that no noise signal is generated in the coil.
第１図は本発明の薄膜磁気ヘッドの実施例を示す図、第
２図は従来の薄膜磁気ヘッドの構成を示す図である。
１・・・・・・磁極接地用引き出しパターン、 ２・・
・・磁極接地用端子、 ３・・・・・・磁極、 ５・・
・・・・コイル、６・・・・コイル用引き出しパターン
、 ７・・・・・コイル用端子、 ８・・・・・基板
、 ９・・・・・・絶縁膜、１０・・・・・絶縁スペー
サ、 １１・・ ・保護膜、３１・・・・・上部磁極、
３２・・・・・下部磁極。FIG. 1 is a diagram showing an embodiment of the thin film magnetic head of the present invention, and FIG. 2 is a diagram showing the configuration of a conventional thin film magnetic head. 1... Extraction pattern for magnetic pole grounding, 2...
...Magnetic pole grounding terminal, 3...Magnetic pole, 5...
... Coil, 6 ... Coil extraction pattern, 7 ... Coil terminal, 8 ... Substrate, 9 ... Insulating film, 10 ... Insulating spacer, 11... Protective film, 31... Upper magnetic pole,
32...Lower magnetic pole.
Claims (1)
が接続される接続部分を設けた導体を有するか、あるい
は磁極の一部分に接地用リード線との接続部分を設けた
ことを特徴とする薄膜磁気ヘッド。It is characterized by having a conductor with one end connected to the magnetic pole and the other end provided with a connecting part to which an external grounding lead wire is connected, or a part of the magnetic pole having a connecting part to the grounding lead wire. Thin film magnetic head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19591088A JPH0246512A (en) | 1988-08-05 | 1988-08-05 | Thin film magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19591088A JPH0246512A (en) | 1988-08-05 | 1988-08-05 | Thin film magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246512A true JPH0246512A (en) | 1990-02-15 |
Family
ID=16349021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19591088A Pending JPH0246512A (en) | 1988-08-05 | 1988-08-05 | Thin film magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246512A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0546941A (en) * | 1991-08-13 | 1993-02-26 | Tdk Corp | Thin-film magnetic head and magnetic head device |
| US5402074A (en) * | 1993-05-13 | 1995-03-28 | Seagate Technology, Inc. | Thin film magnetic head having electrical connection to core |
| US5566038A (en) * | 1993-05-13 | 1996-10-15 | Seagate Technology, Inc. | Thin film magnetic head having core to coil over-voltage protection |
| US7362544B2 (en) | 2003-10-30 | 2008-04-22 | Hitachi Global Storage Technologies Netherlands B.V. | Thin film magnetic head slider, magnetic head support mechanism, magnetic disk drive, and method of manufacturing magnetic head |
-
1988
- 1988-08-05 JP JP19591088A patent/JPH0246512A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0546941A (en) * | 1991-08-13 | 1993-02-26 | Tdk Corp | Thin-film magnetic head and magnetic head device |
| US5402074A (en) * | 1993-05-13 | 1995-03-28 | Seagate Technology, Inc. | Thin film magnetic head having electrical connection to core |
| US5566038A (en) * | 1993-05-13 | 1996-10-15 | Seagate Technology, Inc. | Thin film magnetic head having core to coil over-voltage protection |
| US7362544B2 (en) | 2003-10-30 | 2008-04-22 | Hitachi Global Storage Technologies Netherlands B.V. | Thin film magnetic head slider, magnetic head support mechanism, magnetic disk drive, and method of manufacturing magnetic head |
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