JPH06333203A - Magnetic head device - Google Patents
Magnetic head deviceInfo
- Publication number
- JPH06333203A JPH06333203A JP12265293A JP12265293A JPH06333203A JP H06333203 A JPH06333203 A JP H06333203A JP 12265293 A JP12265293 A JP 12265293A JP 12265293 A JP12265293 A JP 12265293A JP H06333203 A JPH06333203 A JP H06333203A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- circuit board
- recording
- magnetic
- head device
- 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
- 239000000696 magnetic material Substances 0.000 claims description 6
- 239000011162 core material Substances 0.000 claims description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Magnetic Heads (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
(57)【要約】
【目的】本発明は、磁気記録システムにおいて、磁気ヘ
ッドから出力される信号を外乱ノイズの影響を受けるこ
となく、高いS/N比で伝送される安価な磁気ヘッド装
置を提供する。
【構成】本発明の磁気ヘッド装置は、磁気ヘッドチッ
プ、記録/再生増幅器が搭載された回路基板からなり、
それらが一体化された装置として構成される。
【効果】本発明の構成によれば、最も出力信号が小さく
外乱ノイズの影響を受け易い磁気ヘッドと再生増幅器の
間の伝送路が従来より極めて短くなり、高いS/N比で
再生信号の伝送が可能になる。
(57) [Summary] [Object] The present invention provides an inexpensive magnetic head device for transmitting a signal output from a magnetic head with a high S / N ratio without being affected by disturbance noise in a magnetic recording system. provide. A magnetic head device of the present invention comprises a magnetic head chip and a circuit board on which a recording / reproducing amplifier is mounted.
They are configured as an integrated device. According to the structure of the present invention, the transmission line between the magnetic head and the reproduction amplifier, which has the smallest output signal and is easily affected by the disturbance noise, is much shorter than the conventional one, and the reproduction signal is transmitted at a high S / N ratio. Will be possible.
Description
【0001】[0001]
【産業上の利用分野】本発明は、磁気記録媒体を用いて
情報の記録およびまたは再生を行う磁気ヘッド装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head device for recording and / or reproducing information using a magnetic recording medium.
【0002】[0002]
【従来の技術】従来より、FDD、HDD、電子スチル
カメラ、VTR、DAT等の記録およびまたは再生装置
においては、装置の構成上磁気ヘッドアッセンブリーは
各々ヘッドキャリッジや回転ドラムに搭載し、ヘッドの
入出力端子はシールド等十分な外乱ノイズの遮蔽を行っ
た上で、数cmの導線を介して装置の記録再生増幅器に
接続されている。さらにこの遮蔽効果を高めるため、薄
膜磁気ヘッドと増幅素子を同一回路基板上に形成する技
術が提案されている(例えば特開昭63−46614
号)。また実装上の形状は変えずに回路をヘッドベース
上に形成する技術も提案されている(特開64−502
16号)。2. Description of the Related Art Conventionally, in a recording and / or reproducing apparatus such as an FDD, an HDD, an electronic still camera, a VTR, and a DAT, the magnetic head assembly is mounted on a head carriage or a rotating drum due to the structure of the apparatus, and the head is inserted. The output terminal is connected to the recording / reproducing amplifier of the apparatus through a conductor of several cm after being sufficiently shielded from disturbance noise such as a shield. Further, in order to enhance the shielding effect, a technique of forming a thin film magnetic head and an amplifying element on the same circuit board has been proposed (for example, Japanese Patent Laid-Open No. 63-46614).
issue). In addition, a technique for forming a circuit on a head base without changing the mounting shape has been proposed (Japanese Patent Laid-Open No. 64-502).
16).
【0003】[0003]
【発明が解決しようとする課題】しかし従来の技術にお
いては、特に再生過程において磁気ヘッドからの正味の
出力電圧は、数十μV〜数mVであり、このため電磁外
乱ノイズに対して適切な信号品質を保つためには、ヘッ
ド出力端と再生増幅器を結ぶ導線の長さをできるだけ短
くすることや、その配線においても搭載装置に応じた特
殊なノウハウが必要であった。このため、磁気ヘッドか
らの信号を回路基板に高いS/N比で取り込むことは、
装置化のための最適レイアウトと相反する要求になる問
題がある。さらにこの問題を解決するために、ヘッドに
薄膜プロセス技術を用いて実装化する方法(前記特開6
3−46614号)とか、回路に同技術を用いて実装化
する(前記特開昭64−50216号)には、結局コス
ト高になる問題もある。However, in the prior art, the net output voltage from the magnetic head is several tens of μV to several mV, especially in the reproducing process, and therefore, an appropriate signal for the electromagnetic disturbance noise is generated. In order to maintain the quality, it was necessary to shorten the length of the lead wire connecting the head output terminal and the regenerative amplifier as much as possible, and also in the wiring, special know-how according to the mounted device. Therefore, it is difficult to capture the signal from the magnetic head into the circuit board with a high S / N ratio.
There is a problem that the requirements are in conflict with the optimal layout for deviceization. Further, in order to solve this problem, a method of mounting the head on the head by using a thin film process technology (see the above-mentioned JP-A No.
No. 3-46614) or a circuit implemented by using the same technology (Japanese Patent Laid-Open No. 64-50216) has a problem that the cost becomes high.
【0004】[0004]
【課題を解決するための手段】本発明は、従来技術のこ
れらの問題点を解決することを目的とし、磁気ヘッドチ
ップ、記録およびまたは再生回路、および回路基板とか
らなり、これらが一体化された磁気ヘッド装置、および
コア材の主要部分がフェライト等のバルク磁性材料もし
くは厚膜磁性材料からなる磁気ヘッドチップ、記録およ
びまたは再生回路、および回路基板とからなり、これら
が一体化された磁気ヘッド装置、さらに一体化された磁
気ヘッドチップ、記録およびまたは再生回路、および回
路基板とからなり、前記回路基板は、動作上接地電位に
ある電極が少なくとも前記磁気ヘッドチップと前記回路
基板の電気的接触部領域に形成されている磁気ヘッド装
置を堤供する。SUMMARY OF THE INVENTION The present invention aims to solve these problems of the prior art, and comprises a magnetic head chip, a recording and / or reproducing circuit, and a circuit board, which are integrated. Magnetic head device, and a magnetic head chip in which a main part of a core material is a bulk magnetic material such as ferrite or a thick film magnetic material, a recording and / or reproducing circuit, and a circuit board, and these are integrated. The device further comprises a magnetic head chip, a recording and / or reproducing circuit, and a circuit board which are integrated with each other, and the circuit board has at least an electrode that is at a ground potential in operation, and electrically contacts the magnetic head chip and the circuit board. The magnetic head device formed in the partial area is provided.
【0005】[0005]
【作用】本発明の構成による磁気ヘッド装置によれば、
磁気ヘッドと記録およびまたは再生増幅器の微弱な信号
が流れる導線部が極めて短くなり、従来より問題視され
てきたこの部分の外乱ノイズの拾い込みも軽減される。According to the magnetic head device having the structure of the present invention,
The conductor portion through which a weak signal of the magnetic head and the recording and / or reproducing amplifier flows becomes extremely short, and the pickup of disturbance noise in this portion, which has been regarded as a problem in the past, can be reduced.
【0006】[0006]
【実施例】以下図面を用いて本発明の実施例を説明す
る。図1および図2は本発明の実施例の構成の概略図で
あり、図1の(a)は平面図、(b)は底面図、図2の
(a)は平面図、(b)は側面図であり、図において同
じ部位は同じ符号で示し、図において、1は回路基板、
2は接地電位にある電極、3は磁気ヘッドチップ、4は
ヘッド出力信号ライン、5は記録/再生増幅器、7は導
電性鋼板である。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are schematic views of the configuration of an embodiment of the present invention. (A) of FIG. 1 is a plan view, (b) is a bottom view, (a) of FIG. 2 is a plan view, and (b) is It is a side view, the same parts are indicated by the same reference numerals in the drawings, and in the drawings, 1 is a circuit board,
Reference numeral 2 is an electrode at ground potential, 3 is a magnetic head chip, 4 is a head output signal line, 5 is a recording / reproducing amplifier, and 7 is a conductive steel plate.
【0007】図1において、磁気ヘッドチップ3はコア
材の主要部分がフェライト等のバルク磁性材料もしくは
厚膜磁性材料からなり、磁気ヘッドチップ回路基板1の
接地電極上に接着または融着されている。ヘッドチップ
の巻き線の両端は、基板上のヘッド出力信号ライン4に
直接繋がれる。ヘッド出力信号ライン4は記録/再生増
幅器5に繋がっている。こうして本実施例による磁気記
録装置は極めて短いヘッドと記録/再生増幅器間の導線
で高S/Nの信号の授受が達成される。実装は、基板穴
6を用いて、機構部へネジ止めされる。In FIG. 1, the magnetic head chip 3 has a core material mainly composed of a bulk magnetic material such as ferrite or a thick film magnetic material, and is adhered or fused onto the ground electrode of the magnetic head chip circuit board 1. . Both ends of the winding of the head chip are directly connected to the head output signal line 4 on the substrate. The head output signal line 4 is connected to the recording / reproducing amplifier 5. Thus, in the magnetic recording apparatus according to the present embodiment, transmission / reception of a high S / N signal is achieved by the conductor between the extremely short head and the recording / reproducing amplifier. The mounting is screwed to the mechanical portion using the board hole 6.
【0008】図2において、回路基板1はシールド効果
と機械的剛性を確保するため導電性鋼板7との合板構造
をなす。この場合導電性鋼板7は回路の動作上接地電位
にあり、磁気ヘッドチップ3はこの導電性鋼板7に取付
られる。回路パターンは基板の片面にのみ形成される。
本実施例の磁気記録装置においても極めて短いヘッドと
記録再生増幅器間の導線で高S/Nの信号の授受が達成
される。In FIG. 2, the circuit board 1 has a plywood structure with a conductive steel plate 7 in order to secure a shielding effect and mechanical rigidity. In this case, the conductive steel plate 7 is at the ground potential due to the operation of the circuit, and the magnetic head chip 3 is attached to this conductive steel plate 7. The circuit pattern is formed only on one side of the substrate.
Also in the magnetic recording apparatus of this embodiment, transmission / reception of a high S / N signal can be achieved by a conductor between the extremely short head and the recording / reproducing amplifier.
【0009】[0009]
【発明の効果】以上説明したように本発明の構成によれ
ば、磁気ヘッド装置における最も微弱な信号の伝達にお
いて従来以上の高いS/Nの信号が、特殊なノウハウを
必要とせず簡単に確保できる。また、従来用いられてき
た磁気ヘッドベースが無用となる。その上少なくとも本
装置で増幅されたヘッド出力は、その後の導線の引き回
しによるノイズの影響を受け難くなるのでシステム全体
の部品配置の構成の自由度が大きくなる。As described above, according to the configuration of the present invention, a signal having a higher S / N than the conventional one can be easily secured in transmitting the weakest signal in the magnetic head device without requiring special know-how. it can. Further, the magnetic head base which has been conventionally used becomes unnecessary. Moreover, at least the head output amplified by this apparatus is less susceptible to noise due to the subsequent wiring of the conducting wire, so that the degree of freedom in the arrangement of parts of the entire system is increased.
【0010】さらに、最も流布しているバルクヘッドコ
アと安価な紙エポキシ基板で構成することによって、製
造コストも大幅に安くなる。Further, by constructing the bulkhead core which is most widely used and an inexpensive paper-epoxy substrate, the manufacturing cost is significantly reduced.
【図1】本発明の第1の実施例の構成の概略図。FIG. 1 is a schematic diagram of the configuration of a first embodiment of the present invention.
【図2】本発明の第2の実施例の構成の概略図。FIG. 2 is a schematic diagram of the configuration of a second embodiment of the present invention.
1 回路基板 2 電極 3 磁気ヘッドチップ 4 ヘッド出力信号ライン 5 記録/再生増幅器 6 基板穴 7 導電性鋼板 1 circuit board 2 electrode 3 magnetic head chip 4 head output signal line 5 recording / reproducing amplifier 6 substrate hole 7 conductive steel plate
Claims (3)
回路、および回路基板とからなり、これらが一体化され
たことを特徴とする磁気ヘッド装置。1. A magnetic head device comprising a magnetic head chip, a recording and / or reproducing circuit, and a circuit board, which are integrated.
磁性材料もしくは厚膜磁性材料からなる磁気ヘッドチッ
プ、記録およびまたは再生回路、および回路基板とから
なり、これらが一体化されたことを特徴とする磁気ヘッ
ド装置。2. A main part of a core material comprises a magnetic head chip made of a bulk magnetic material such as ferrite or a thick film magnetic material, a recording and / or reproducing circuit, and a circuit board, which are integrated. And magnetic head device.
びまたは再生回路、および回路基板とからなり、前記回
路基板は、動作上接地電位にある電極が少なくとも前記
磁気ヘッドチップと前記回路基板の電気的接触部領域に
形成されていることを特徴とする磁気ヘッド装置。3. An integrated magnetic head chip, a recording and / or reproducing circuit, and a circuit board, wherein the circuit board has at least an electrode that is at a ground potential in operation and is electrically connected to the magnetic head chip and the circuit board. A magnetic head device, wherein the magnetic head device is formed in a static contact portion region.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12265293A JPH06333203A (en) | 1993-05-25 | 1993-05-25 | Magnetic head device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12265293A JPH06333203A (en) | 1993-05-25 | 1993-05-25 | Magnetic head device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06333203A true JPH06333203A (en) | 1994-12-02 |
Family
ID=14841282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12265293A Pending JPH06333203A (en) | 1993-05-25 | 1993-05-25 | Magnetic head device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06333203A (en) |
-
1993
- 1993-05-25 JP JP12265293A patent/JPH06333203A/en active Pending
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