JPH0325717A - Magnetic head device - Google Patents

Magnetic head device

Info

Publication number
JPH0325717A
JPH0325717A JP16207089A JP16207089A JPH0325717A JP H0325717 A JPH0325717 A JP H0325717A JP 16207089 A JP16207089 A JP 16207089A JP 16207089 A JP16207089 A JP 16207089A JP H0325717 A JPH0325717 A JP H0325717A
Authority
JP
Japan
Prior art keywords
head
circuit
magnetic head
write
magnetic
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
JP16207089A
Other languages
Japanese (ja)
Inventor
Kazutoshi Morikawa
森川　和敏
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP16207089A priority Critical patent/JPH0325717A/en
Publication of JPH0325717A publication Critical patent/JPH0325717A/en
Pending legal-status Critical Current

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
    • G11B5/4806—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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
    • 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
    • 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
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers

Landscapes

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

Abstract

PURPOSE:To shorten a lead wire to a magnetic head circuit and to improve the mechanical follow-up characteristic of a head slider by loading a head circuit on a head suspension. CONSTITUTION:The head circuit 5 corresponding to a magnetic head 1 is loaded on the head suspension 3. When write data is inputted to the write circuit 5, a write current flows from the circuit 5 to the lead wire 6, and the write of the data is performed via the head 1. At this time, since the lead wire 6 between the circuit 5 and the head 1 is short, the start time of the write current can be reduced. Therefore, the mechanical follow-up characteristic of the head slider 2 is improved. Also, when readout is performed, the interference by an external noise is reduced, and a signal to noise ratio is prevented lowered.

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は、例えば固定式磁気ディスク装置に使用され
る磁気ヘッド装置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a magnetic head device used, for example, in a fixed magnetic disk device.

［従来の技術］ 第３図はこの種従来の磁気ヘッド装置を示す要部の平面
図であり．図において（１）は磁気ヘッド、（２）はこ
の磁気ヘッドを有するヘッドスライダー（３）はこのヘ
ッドスライダーを自由端に設けたヘッドサスペンション
、（４）はこのヘッドサスペンションの他端を固定した
可動アーム、（５）は上記磁気ヘッドの制御用ヘッド回
路，（７）はこのヘッド回路を搭載させた上記可動アー
ム上のプリント回路板，（８）はコネクターである。[Prior Art] Figure 3 is a plan view of the main parts of a conventional magnetic head device of this type. In the figure, (1) is a magnetic head, (2) is a head slider with this magnetic head (3) is a head suspension with this head slider installed at the free end, and (4) is a movable head suspension with the other end fixed. The arm, (5) is a head circuit for controlling the magnetic head, (7) is a printed circuit board on the movable arm on which this head circuit is mounted, and (8) is a connector.

次に動作について説明する。すなわち第３図のように構
成された磁気ヘッド装置では，書込み時においてコネク
ター（８）から書込みデータが供給され、これがヘッド
回路（５）に入力されると、ヘッド回路（５）の書込み
回路から書込み電流が発生する。磁気ヘッド（１）のヘ
ッドコイル（図示せず）は周知のリード線を介してプリ
ント回路板（７）に接続されており、上記書込み電流は
プリント回路板（７）および上記リード線を介してヘッ
ドコイルに流れ、データの書込みが行なわれる。Next, the operation will be explained. In other words, in the magnetic head device configured as shown in FIG. 3, write data is supplied from the connector (8) during writing, and when this is input to the head circuit (5), the write data is supplied from the write circuit of the head circuit (5). Write current is generated. A head coil (not shown) of the magnetic head (1) is connected to a printed circuit board (7) through a well-known lead wire, and the write current is transmitted through the printed circuit board (7) and the lead wire. The current flows to the head coil, and data is written.

この場合磁気ヘッド（１）とヘッド回路（５）とを接続
する配線路が長くなると、ヘッド回路（５）に内蔵され
ている書込み回路出力端から見た負荷インピーダンスに
直接影響し、書込み電流の立ち上がりが鈍くなる。In this case, if the wiring path connecting the magnetic head (1) and the head circuit (5) becomes long, it will directly affect the load impedance seen from the write circuit output terminal built in the head circuit (5), and the write current will increase. Getting up is slow.

また再生時においてこの配線路より外部から混入する外
来雑音は配線路の長さに比例して大きくなり、配線路が
長くなるとＳＮ比が低下する。Furthermore, during reproduction, external noise that enters from outside through this wiring path increases in proportion to the length of the wiring path, and the longer the wiring path becomes, the lower the SN ratio becomes.

これらの問題点を改善する手段として上記のヘッド回路
をヘッドスライダーに装着する方法が提案されているの
で、以下その内容について説明する。A method of mounting the above-mentioned head circuit on a head slider has been proposed as a means to improve these problems, and the details thereof will be explained below.

すなわち第２図は特開昭５３−６９６２３号公報に示さ
れた磁気ヘッド装置の要部を示す斜視図であり，この図
において（１）は磁気ヘッド、（２）はヘッドスライダ
ー、（５）はこのヘッドスライダー上に位置するようプ
リント回路板（７）上に搭載されたヘッド回路である。That is, FIG. 2 is a perspective view showing the main parts of the magnetic head device disclosed in Japanese Patent Application Laid-Open No. 53-69623. In this figure, (1) is a magnetic head, (2) is a head slider, and (5) is a magnetic head device. is a head circuit mounted on a printed circuit board (7) so as to be located above this head slider.

このようにして磁気ヘッド（１）とヘッド回路（５）と
の間の配線路を短くし、書込み回路出力端から見た負荷
インピーダンスを低減し書込み電流の立ち上りを速くす
ると共に、外来雑音を低減させるようにしている。In this way, the wiring path between the magnetic head (1) and the head circuit (5) is shortened, the load impedance seen from the write circuit output terminal is reduced, the write current rises faster, and external noise is reduced. I try to let them do it.

［発明が解決しようとする課題］ 従来の磁気ヘッド装置は以上のように構成されているの
で、第３図の従来例では磁気ヘッドとヘッド回路との間
の配ａ路が長くなりＳＮ比が低下するという問題点があ
り、また第２図の従来例では次のような問題点がある。[Problems to be Solved by the Invention] Since the conventional magnetic head device is configured as described above, in the conventional example shown in FIG. In addition, the conventional example shown in FIG. 2 has the following problems.

すなわちヘッドスライダーは回転する磁気ディスクの機
械的な変動に対する追従性能の良さが重要であり、その
ためにはヘッドスライダーの小形軽量化が必須であるが
、ヘッド回路をこのヘッドスライダーに装着すると、ヘ
ッドスライダーの小形軽量化が困難となり、ヘッドスラ
イダーの機械的追従性能が低下する．また従来の磁気ヘ
ッドへの入出力線は２本ないし３本であったが、ヘッド
回路をヘッドスライダーに装着すると６本ないし１０本
のヘッド回路への入出力線が、ヘッドスライダーから引
出されることになり、これら引出し線の剛性が前述の機
械的追従性能を低下させるという問題点を拌うものであ
る。In other words, it is important for the head slider to have good tracking performance against the mechanical fluctuations of the rotating magnetic disk, and for this purpose it is essential that the head slider be made smaller and lighter. It becomes difficult to reduce the size and weight of the head slider, and the mechanical tracking performance of the head slider deteriorates. In addition, conventional magnetic heads had two or three input/output lines, but when a head circuit is attached to a head slider, six to ten input/output lines to the head circuit are drawn out from the head slider. This complicates the problem that the rigidity of these lead wires deteriorates the mechanical tracking performance mentioned above.

この発明は上記の問題点を解消するためになされたもの
で，磁気ヘッドとヘッド回路との間の配線路をできるだ
け短くすると共に、ヘッドスライダーの機械的追従性能
を損わない磁気ヘッド装置を得ることを目的とする． ［課題を解決するための手段］ この発明の場合は、磁気ヘッド（１）に対して記録およ
び再生の制御を行なうヘッド回路（５）を、一端を可動
アーム（４）に固定し自由端に磁気ヘッドを有するヘッ
ドスライダー（２）を取付けたヘッドサスペンション（
３）に搭載させている。This invention was made to solve the above-mentioned problems, and provides a magnetic head device in which the wiring path between the magnetic head and the head circuit is made as short as possible, and the mechanical tracking performance of the head slider is not impaired. The purpose is to [Means for Solving the Problems] In the case of the present invention, a head circuit (5) that controls recording and reproduction for a magnetic head (1) is fixed at one end to a movable arm (4) and attached to a free end. Head suspension (2) with a head slider (2) equipped with a magnetic head
3).

［作　用コ この発明の場合は、ヘッド回路がヘソドサスベンヨンに
搭載されているので、このヘッド回路と磁気ヘッドとの
間の配線路が短くなると共に，ヘッドスライダーの機械
的追従特性に支障を与えない。[Function] In the case of this invention, since the head circuit is mounted on the head suspension, the wiring path between the head circuit and the magnetic head is shortened, and the mechanical tracking characteristics of the head slider are not affected. not give.

［実施例］ 以下この発明の一実施例について説明する。すなわち第
１図において（１）は磁気ヘッド，（２）はこの磁気ヘ
ッド（１）を搭載したヘッドスライダー（３）はこのヘ
ソトスライダー（２）をその自由端に支持させたヘッド
サスペンション、（４）はこのヘッドサスペンション（
３）の他端を固着させた可動アーム，（５〉は上記磁気
ヘッド（１）に対して記録および再生の制御を行なうヘ
ッド回路で、上記へッドサスペンション（３）に搭載さ
れている．　（６）は磁気ヘッド（１）とヘッド回路（
５）とを接続するためのリード線である． 次に動作について説明する．まず書込みモードにおいて
書込みデータがヘッド回路（５）に入力されると、この
ヘッド回路（５）の書込み回路から書込み電流が発生し
、この電流がリード線（６）に流れ、磁気ヘッド（１）
を介してデータの書込みが行なわれる。この時ヘッド回
路（５）と磁気ヘッド（１）との間のりード１ｉＡ（６
）が短いため、リード線が本来有する書込み回路のイン
ピーダンスを低減でき、書込み電流の電流立ち上り時間
を短くすることができる。また読出しモードにおいて磁
気ヘッド（１）を介して誘導される再生信号はリード線
（６）を流れ、この信号がヘッド回路（５）に入力され
ると、ヘッド回路（５）の読出し回路から読出しデータ
が生成される。この時ヘッド回路（５）と磁気ヘッド（
１）との間のリード線（６）が短いことにより、外来雑
音を受けにくく、ＳＮ比の低下を防ぐことができる．そ
して上記のヘッド回路（５）はへットサスペンション（
３）に搭載されているため、ヘッドスライダー（２）の
機械的追従特性に悪影響を与えることはない。なお上記
のヘッド回路としてはＩＣやその他のものを使用しても
よい。[Example] An example of the present invention will be described below. That is, in FIG. 1, (1) is a magnetic head, (2) is a head slider (3) on which this magnetic head (1) is mounted, a head suspension that supports this belly button slider (2) at its free end, and ( 4) This head suspension (
3) A movable arm (5) with the other end fixed is a head circuit for controlling recording and reproduction of the magnetic head (1), which is mounted on the head suspension (3). (6) shows the magnetic head (1) and the head circuit (
5) This is a lead wire for connecting with. Next, we will explain the operation. First, when write data is input to the head circuit (5) in the write mode, a write current is generated from the write circuit of this head circuit (5), this current flows to the lead wire (6), and the magnetic head (1)
Data is written via the . At this time, the lead between the head circuit (5) and the magnetic head (1) is 1iA (6
) is short, the impedance of the write circuit inherent in the lead wire can be reduced, and the current rise time of the write current can be shortened. Furthermore, in the read mode, the reproduction signal induced through the magnetic head (1) flows through the lead wire (6), and when this signal is input to the head circuit (5), it is read out from the read circuit of the head circuit (5). Data is generated. At this time, the head circuit (5) and the magnetic head (
1), the short lead wire (6) makes it less susceptible to external noise and prevents a drop in the S/N ratio. And the above head circuit (5) is the head suspension (
3), it does not adversely affect the mechanical tracking characteristics of the head slider (2). Note that an IC or other circuit may be used as the above-mentioned head circuit.

［発明の効果コ この発明の磁気ヘッド装置では以上のように，ヘッド回
路をヘッドサスペンション上に［し，磁気ヘッドとヘッ
ド回路との間のリード線を短くしているので、ヘッドス
ライダーの機械的追従特性に悪影響を与えることなく、
しかも書込み回路のインピーダンスおよび外来雑音によ
るＳＮ比の低下を抑えることができ，磁気ディスク装置
の信頼性を高められるという効果がある。[Effects of the Invention] As described above, in the magnetic head device of this invention, the head circuit is mounted on the head suspension, and the lead wire between the magnetic head and the head circuit is shortened, so that the mechanical strength of the head slider is reduced. without adversely affecting tracking characteristics.
Moreover, it is possible to suppress a decrease in the S/N ratio due to the impedance of the write circuit and external noise, and there is an effect that the reliability of the magnetic disk device can be improved.

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

第１図はこの発明の磁気ヘッド装置の要部の一実施例を
示す平面図、第２図はヘッドスライダー上にヘッド回路
を搭載した従来例を示す要部の斜視図、第３図は従来の
磁気ヘッド装置の要部を示す平面図である． なお図中（１）は磁気ヘッド、（２）はヘッドスライダ
ー、（３）はヘッドサスペンション、（４）は可動アー
ム、（５）はヘッド回路である。Fig. 1 is a plan view showing an embodiment of the main part of the magnetic head device of the present invention, Fig. 2 is a perspective view of the main part showing a conventional example in which a head circuit is mounted on a head slider, and Fig. 3 is a conventional example. FIG. 2 is a plan view showing the main parts of the magnetic head device. In the figure, (1) is a magnetic head, (2) is a head slider, (3) is a head suspension, (4) is a movable arm, and (5) is a head circuit.

Claims (1)

【特許請求の範囲】[Claims] 　一端を可動アームに固定し、自由端に磁気ヘッドを有
するヘッドスライダーを取付けたヘッドサスペンション
に、上記磁気ヘッドに対して記録および再生の制御を行
なうヘッド回路を搭載させたことを特徴とする磁気ヘッ
ド装置。A magnetic head characterized in that a head suspension having one end fixed to a movable arm and a head slider having a magnetic head attached to a free end is equipped with a head circuit for controlling recording and reproduction for the magnetic head. Device.
JP16207089A 1989-06-23 1989-06-23 Magnetic head device Pending JPH0325717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16207089A JPH0325717A (en) 1989-06-23 1989-06-23 Magnetic head device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16207089A JPH0325717A (en) 1989-06-23 1989-06-23 Magnetic head device

Publications (1)

Publication Number Publication Date
JPH0325717A true JPH0325717A (en) 1991-02-04

Family

ID=15747522

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16207089A Pending JPH0325717A (en) 1989-06-23 1989-06-23 Magnetic head device

Country Status (1)

Country Link
JP (1) JPH0325717A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5712747A (en) * 1996-01-24 1998-01-27 International Business Machines Corporation Thin film slider with on-board multi-layer integrated circuit
US5956211A (en) * 1997-10-31 1999-09-21 Questek Innovations, Inc. Chip attached to actuator arm having heat conducting fibers
US6014289A (en) * 1994-03-22 2000-01-11 Hutchinson Technology Incorporated Integrated circuit on a monocoque suspension
US6084746A (en) * 1997-03-04 2000-07-04 Tdk Corporation Magnetic head device
US6134084A (en) * 1997-09-10 2000-10-17 Fujitsu Limited Suspension assembly having a head IC chip mounting portion
US6144530A (en) * 1997-12-24 2000-11-07 Tdk Corporation Magnetic head apparatus with head IC chip
WO2001026099A1 (en) * 1999-10-05 2001-04-12 Questek Innovations, Inc. Low impedance head/preamplifier chip position in a disk drive
US6437944B2 (en) 1997-10-20 2002-08-20 Fujitsu Limited Head slider supporting device, disk device and suspension
US6483669B1 (en) 1999-09-17 2002-11-19 Hutchinson Technology Incorporated Integrated lead suspension with IC chip and method of manufacture

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6014289A (en) * 1994-03-22 2000-01-11 Hutchinson Technology Incorporated Integrated circuit on a monocoque suspension
US5771571A (en) * 1996-01-24 1998-06-30 International Business Machines Corporation Method for manufacturing thin film slider with on-board multi-layer integrated circuit
US5712747A (en) * 1996-01-24 1998-01-27 International Business Machines Corporation Thin film slider with on-board multi-layer integrated circuit
US6522502B1 (en) 1997-03-02 2003-02-18 Tdk Corporation Magnetic head device
US6898840B1 (en) 1997-03-04 2005-05-31 Tdk Corporation Method of fabricating a magnetic head device
US6084746A (en) * 1997-03-04 2000-07-04 Tdk Corporation Magnetic head device
US6388840B1 (en) 1997-09-10 2002-05-14 Fujitsu Limited Suspension having a head IC mounting portion formed on a rigid portion between a base portion and a head slider mounting portion
US6134084A (en) * 1997-09-10 2000-10-17 Fujitsu Limited Suspension assembly having a head IC chip mounting portion
US6437944B2 (en) 1997-10-20 2002-08-20 Fujitsu Limited Head slider supporting device, disk device and suspension
US6583962B2 (en) 1997-10-20 2003-06-24 Fujitsu Limited Head slider supporting device, disk device and suspension having thermal protection for head IC chip
US5956211A (en) * 1997-10-31 1999-09-21 Questek Innovations, Inc. Chip attached to actuator arm having heat conducting fibers
US6144530A (en) * 1997-12-24 2000-11-07 Tdk Corporation Magnetic head apparatus with head IC chip
US6483669B1 (en) 1999-09-17 2002-11-19 Hutchinson Technology Incorporated Integrated lead suspension with IC chip and method of manufacture
US6944936B2 (en) 1999-09-17 2005-09-20 Hutchinson Technology Incorporated Method for manufacturing an integrated lead suspension
WO2001026099A1 (en) * 1999-10-05 2001-04-12 Questek Innovations, Inc. Low impedance head/preamplifier chip position in a disk drive

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