JPS59203212A - Magnetic head device - Google Patents

Magnetic head device

Info

Publication number
JPS59203212A
JPS59203212A JP7847683A JP7847683A JPS59203212A JP S59203212 A JPS59203212 A JP S59203212A JP 7847683 A JP7847683 A JP 7847683A JP 7847683 A JP7847683 A JP 7847683A JP S59203212 A JPS59203212 A JP S59203212A
Authority
JP
Japan
Prior art keywords
magnetic
rotating drum
magnetic pole
head device
rotary drum
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
JP7847683A
Other languages
Japanese (ja)
Inventor
Hideo Agari
上利　秀夫
Atsushi Takeuchi
淳 竹内
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7847683A priority Critical patent/JPS59203212A/en
Publication of JPS59203212A publication Critical patent/JPS59203212A/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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To improve the efficiency of recording and reproducing by forming a closed magnetic path among a magnetic tape running on the outside circumference of a rotary drum, the rotary drum, and magnetic poles to transmit signals. CONSTITUTION:The magnetic tape consists of a vertical recordong film 2, a horizontal recording film 7, and a base 3. A fixed drum 11 has a helical control step part 12 on the outside circumference, and a rotary drum 14 faces the fixed drum 11 with a slight gap 13 between them and consists of high-permeability materials. A magnetic pole 15 has a coil part 16 in a part, and one end is connected magnetically to the rotary drum 14, and the other end is projected in the outside circumferential direction of the rotary drum 14.

Description

【発明の詳細な説明】 産業上の利用分野 本発明に、磁気テープ厚み方向磁化により記録再生を行
う磁気ヘッド装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a magnetic head device that performs recording and reproduction by magnetizing in the thickness direction of a magnetic tape.

従来例の構成とその問題点 現在、磁気テープの厚み方向に磁区を形成し記録再生を
行う垂直記録方式が検討されている。その目的は、従来
以上の高密度化を目指すためであり、従来の磁気テープ
長手方向に磁区形成を行う面内磁化に対し減磁界作用、
ピークシフト現象の軽減等様々のメリットが報告されて
いる。Conventional configurations and their problems Currently, a perpendicular recording system is being studied in which magnetic domains are formed in the thickness direction of a magnetic tape to perform recording and reproduction. The purpose of this is to achieve higher density than conventional magnetic tapes.
Various benefits have been reported, including reduction of peak shift phenomenon.

第１図に垂直記録方式における原型とも言うべき対向型
の磁気へノド装置を示す。FIG. 1 shows an opposing type magnetic hennode device, which can be called the prototype of the perpendicular recording system.

本図にて、磁気テープ１は、Ｃｏ−Ｃｒ等の成分よりな
る垂直記録膜２及びベース面３よシ成り、磁気テープ１
を挾んで垂直記録膜２に近接もしくは当接する主磁極４
と信号伝達用の巻線５を巻回しだ補磁極６で構成されて
いる。In this figure, the magnetic tape 1 consists of a perpendicular recording film 2 made of components such as Co-Cr and a base surface 3.
A main magnetic pole 4 that is close to or in contact with the perpendicular recording film 2 while sandwiching the
and a complementary pole 6 around which a winding 5 for signal transmission is wound.

動作は、巻線５に印加される信号電流により補磁極６内
を通過する磁力線（破線）が磁気テープ１を通り主磁極
４に集束する。この時、主磁極４の先端により垂直記録
膜２が磁化され信号磁区が形成される。In operation, a signal current applied to the winding 5 causes lines of magnetic force (broken lines) passing through the complementary magnetic pole 6 to pass through the magnetic tape 1 and focus on the main magnetic pole 4. At this time, the perpendicular recording film 2 is magnetized by the tip of the main magnetic pole 4 to form a signal magnetic domain.

再生は、前記動作と全く逆の動作にて行われる。Reproduction is performed in the exact opposite manner to the above-mentioned operation.

本構成に於ける問題は、磁気回路が開ループであるため
再生効率の低下、比較的大きい記録電流を必要とする等
である。Problems with this configuration are that the magnetic circuit is open-loop, resulting in a reduction in reproduction efficiency and the need for a relatively large recording current.

捷た、磁気テープを挾持する構成のためンステム展開に
除しても制約される。Due to the structure in which the magnetic tape is held in place, system development is restricted.

第２図は、前記の問題を解決すべく構成された他の従来
例である。磁気テープ１に、垂直記録膜２とベース３の
間に水平記録膜７を挾んだ構造であり、磁極８は、小り
［面積部９と比較的大きい大断面積部１Ｑ及びそれ等の
一部に巻回される巻線５にて構成される。FIG. 2 shows another conventional example configured to solve the above problem. The magnetic tape 1 has a structure in which a horizontal recording film 7 is sandwiched between a perpendicular recording film 2 and a base 3. It is composed of a winding 5 that is partially wound.

本構成によれば、巻線５の印加電流による磁力線（破線
）は、磁極８−垂直記録膜２−水平記録膜７−垂直記録
膜２−磁極８の閉ループとなるため磁気回路効率が良好
で、しかも片側タイプであるため従来の種々装置への展
開が行い易い。According to this configuration, the lines of magnetic force (broken line) due to the applied current to the winding 5 form a closed loop of the magnetic pole 8 - perpendicular recording film 2 - horizontal recording film 7 - perpendicular recording film 2 - magnetic pole 8, so that the magnetic circuit efficiency is good. Moreover, since it is a one-sided type, it can be easily applied to various conventional devices.

しかし、上記のような構成：１ＶＴＲ等の回転ドラム装
置へ展開しようとすれば、必然的に磁極８を乗せるベー
スが必要となυ、そのベースと磁極８の位置調整、ある
いは、ベースを取り付けるべく装置側の加工、磁極８を
乗せたベースと装置側との相対位置調整等が必要である
。However, if you try to develop the above configuration into a rotating drum device such as a VTR, you will inevitably need a base on which the magnetic pole 8 will be placed, and you will have to adjust the position of the base and the magnetic pole 8, or install the base. Processing on the device side, relative position adjustment between the base on which the magnetic pole 8 is placed and the device side, etc. are required.

また、ベース形状により装置自体の大きさ変更（例えば
ドラムの小径化など）を制限してし１９等の加工２組立
に係る種々の問題を有しているＯ発明の目的 本発明は従来の問題点全解消するもので、簡易な構成で
組立性あるいは磁気回路効率等の良好な磁気ヘッド装置
全提供することを目的とするＯ発明の構成 本発明は、高透磁率材料よりなる回転ドラムと、一端が
前記回転ドラムの外周方向に突出し、他端を前記回転ド
ラムと磁気的に結合させてなる磁極と、その磁極の外周
に巻装されたコイル部とを備えた磁気ヘッド装置であり
、前記磁気テープと回転ドラム及び磁極の間で閉磁路を
形成させることにより、簡易な構成で磁気効率の良好な
記録再生を行うことのできるものである○ 実施例の説明 第３図は本発明の第１の実施例における磁気ヘッド装置
の概略図を示すものである。In addition, the shape of the base limits changes in the size of the device itself (for example, reducing the diameter of the drum), and there are various problems related to processing and assembly. It is an object of the present invention to provide a magnetic head device with a simple structure and good assembly efficiency and magnetic circuit efficiency.The present invention provides a rotating drum made of a high permeability material, A magnetic head device comprising: a magnetic pole having one end protruding toward the outer circumference of the rotating drum and the other end magnetically coupled to the rotating drum; and a coil portion wound around the outer circumference of the magnetic pole. By forming a closed magnetic path between the magnetic tape, the rotating drum, and the magnetic poles, recording and reproducing with good magnetic efficiency can be performed with a simple configuration. 1 shows a schematic diagram of a magnetic head device in a first embodiment.

第３図において、１は磁気テープで垂直記録膜２、水平
記録膜７、ベース３よりなっている。In FIG. 3, reference numeral 1 denotes a magnetic tape consisting of a perpendicular recording film 2, a horizontal recording film 7, and a base 3.

固定トラム１１は、その外周にヘリカル状の規制段部１
２を再し、前記固定ドラム１１にわずかな間隙１３を有
して対向して高透磁率材料よりなる回転ドラム１４があ
る０ 磁極１５は、一部にコイル部１６を有し一端が回転ドラ
ム１４に対し磁気的に結合されており、他端は回転ドラ
ム１４の外周方向に突出させて構成されている。The fixed tram 11 has a helical regulating step 1 on its outer periphery.
2, there is a rotating drum 14 made of a high magnetic permeability material facing the fixed drum 11 with a slight gap 13 0. The magnetic pole 15 has a coil portion 16 in a part and one end is a rotating drum. 14, and the other end thereof is configured to protrude toward the outer circumference of the rotating drum 14.

以上の様に構成された本実施例の磁気ヘッド装置につい
て、以下その動作を説明する。The operation of the magnetic head device of this embodiment configured as described above will be described below.

磁気テープ１と所定の相対速度となる様に回転する回転
ドラム１４に設けられた磁極′１５のコイル部１６に信
号電流を印加すると信号磁界は破線に示す如く閉磁路で
流れる。ここで磁極１５内には磁束が集果するため垂直
記録膜２に信号磁区が形成される。When a signal current is applied to the coil portion 16 of the magnetic pole '15 provided on the rotary drum 14 which rotates at a predetermined relative speed to the magnetic tape 1, the signal magnetic field flows in a closed magnetic path as shown by the broken line. Here, since magnetic flux is concentrated within the magnetic pole 15, a signal magnetic domain is formed in the perpendicular recording film 2.

以上のように本実施例によれば、回転ドラム１４を高透
磁率材料としそれに一端を磁気的に結合し他端を磁気テ
ープに近接あるいは当接するように設けることにより、
閉磁路による磁気効率のアップが計れる。また、磁極と
コイル部だけの形成にてヘッド構成がとれるため、薄膜
ヘッド製造技術（パターンによるエツチング加工等）の
展開が容易で加工あるいは組立てコスト等の低減が可能
となる。As described above, according to this embodiment, the rotating drum 14 is made of a high magnetic permeability material, and one end thereof is magnetically coupled to the rotating drum 14, and the other end is provided so as to be close to or in contact with the magnetic tape.
Magnetic efficiency can be increased by closed magnetic circuit. Further, since the head structure can be obtained by forming only the magnetic pole and the coil portion, thin film head manufacturing technology (pattern etching, etc.) can be easily developed, and processing or assembly costs can be reduced.

以下本発明の第２の実施例について、図面を参照しなが
ら説明する０ 第４図は本発明の第２の実施例を示す磁気ヘッド装置の
概略図である０ 同図に於いて、１は磁気テープで垂直記録膜２、水平記
録膜７、ベース３よシなる。１２は固定ドラム１１に設
けられた規制部、１５は磁極、１６にコイル部であり、
１４は高透磁率材料よりなる回転ドラムである。以上に
第３図の構成と同様なものである。第３図の構成と異な
るのは、磁極１６を回転ドラム１６の外周面に設けた点
である０上記のように構成された第２の実施例の磁気ヘ
ッド装置について、以下その動作を説明する０コイル部
１６に印加される信号電流により磁界が破線のように閉
ループを形成し磁束集中の最も大きい磁極１５にて磁気
テープ１の垂直記録膜２に信号磁区が形成される。A second embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a schematic diagram of a magnetic head device showing a second embodiment of the present invention. The magnetic tape consists of a perpendicular recording film 2, a horizontal recording film 7, and a base 3. 12 is a regulating part provided on the fixed drum 11, 15 is a magnetic pole, 16 is a coil part,
14 is a rotating drum made of a high magnetic permeability material. The above configuration is similar to the configuration shown in FIG. The difference from the configuration shown in FIG. 3 is that the magnetic pole 16 is provided on the outer peripheral surface of the rotating drum 16.The operation of the magnetic head device of the second embodiment configured as described above will be explained below. The signal current applied to the zero coil section 16 causes the magnetic field to form a closed loop as shown by the broken line, and a signal magnetic domain is formed in the perpendicular recording film 2 of the magnetic tape 1 at the magnetic pole 15 where the magnetic flux concentration is greatest.

以上のように本実施例によれば磁極１５を回転ドラム１
６の外周面が囲むように設けることにより磁極１５以外
の磁性体（ここでは回転ドラム１４）が磁気テープ１の
垂直記録膜２に近接または当接する面積が大きくできる
ため磁極１５への磁束集中がより犬きくできる。また、
本実施例の上回転ドラム型の装置だけでなく全回転ドラ
ム型等への展開が可能となる。As described above, according to this embodiment, the magnetic pole 15 is connected to the rotating drum 1.
By surrounding the outer peripheral surface of the magnetic pole 6, the area in which the magnetic body other than the magnetic pole 15 (in this case, the rotating drum 14) comes close to or comes into contact with the perpendicular recording film 2 of the magnetic tape 1 can be increased, so that the concentration of magnetic flux on the magnetic pole 15 can be increased. I can listen to dogs better. Also,
This embodiment can be applied not only to the top-rotating drum type device but also to a full-rotating drum type device.

なお、第１の実施例において、磁極１５は断面形状を角
型としたが円型その他の形状としても良い０ また、コイル部１６は回転ドラム１４端面に沿って記し
たが磁極１５の磁気テープ１面と対向する位置に設けて
も良い。In the first embodiment, the magnetic pole 15 has a rectangular cross-sectional shape, but may have a circular or other shape. Also, although the coil portion 16 is shown along the end surface of the rotating drum 14, the magnetic tape of the magnetic pole 15 It may be provided at a position facing the first surface.

捷だ、第２の実施例では、コイル部１６を回転ドラム１
４の凹部に埋設したが、回転ドラム１４の外周面に平面
的にらせん状のパターンとして設けても良い。However, in the second embodiment, the coil part 16 is connected to the rotating drum 1.
Although it is embedded in the recessed portion of No. 4, it may be provided in a two-dimensional spiral pattern on the outer circumferential surface of the rotating drum 14.

発明の効果 本発明の磁気ヘッド装置は、高透磁率材料の回転ドラム
と、その回転ドラムに一端を磁気的に結合し他端を磁気
テープに近接もしくは当接させる磁極と、信号伝達用の
コイル部を磁極の一部に設けることにより、信号磁界が
閉ループを形成するため記録再生効率か向上する。また
、磁極とコイル部の形成が薄膜ヘッド製造技術に於ける
パターンによるエツチング加工等の利用にて行えるため
、磁極の取付は精度の向上、従来のヘノドベース不要等
に伴う加工、組立性の向上、コストダウンがはかれる等
、その実用的効果は犬なるものである。Effects of the Invention The magnetic head device of the present invention comprises a rotating drum made of a high magnetic permeability material, a magnetic pole having one end magnetically coupled to the rotating drum and the other end being close to or in contact with a magnetic tape, and a signal transmission coil. By providing a part of the magnetic pole in a part of the magnetic pole, the signal magnetic field forms a closed loop, thereby improving recording and reproducing efficiency. In addition, since the magnetic pole and coil portion can be formed using etching processing using patterns in thin film head manufacturing technology, the accuracy of magnetic pole mounting is improved, and processing and assemblability due to the need for the conventional hennode base are improved. Its practical effects, such as cost reduction, are significant.

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

第１図および第２図は、従来の磁気ヘッド装置の概略側
面図、第３図ａは、本発明の第１の実施例における磁気
ヘッド装置の正面図、同図すは同装置の磁極近傍の拡大
断面図、第４図ａは、本発明の第２の実施例における磁
気ヘッド装置の正面図、同図すは同装置の磁極近傍の拡
大断面図である。 １　　・磁気テープ、１１・・　固定ドラム、１２・−
・規制段部、１３　　間隙、１４　　・回転ドラム、１
５　−磁極、１６・・　コイル。 代理人の氏名　弁理士　中　尾　敏　男　はが１名Ｊ 第３図 、、；し、　　　　　　　　　　　　　　　　　　（ｂ
ノー４ 第　４　図 （α’　　　　　　　　　ｃｂ＋1 and 2 are schematic side views of a conventional magnetic head device, and FIG. 3a is a front view of a magnetic head device according to a first embodiment of the present invention. FIG. 4A is a front view of a magnetic head device according to a second embodiment of the present invention, and FIG. 4A is an enlarged sectional view of the vicinity of the magnetic pole of the device. 1.Magnetic tape, 11.. Fixed drum, 12.-
・Regulation step, 13 Gap, 14 ・Rotating drum, 1
5 - magnetic pole, 16... coil. Name of agent: Patent attorney Toshio Nakao (1 person) Figure 3, (b)
No 4 Figure 4 (α' cb+

Claims (2)

【特許請求の範囲】[Claims] （１）高透磁率材料よりなる回転ドラムと、一端が前記
回転ドラムの外周方向に突出し、他端を前記回転ドラム
と磁気的に結合させてなる磁極と、その磁極の外周に巻
装されたコイル部とを具備し、前記回転ドラムの外周上
を走行する磁気テープと７＋ｉＪ記回転ドラム及び磁極
間で閉磁路を形成し信号伝達を行う祿にしたことを特徴
とする磁気ヘッド装置。(1) A rotating drum made of a high magnetic permeability material, a magnetic pole having one end protruding toward the outer periphery of the rotating drum and the other end magnetically coupled to the rotating drum, and a magnetic pole wrapped around the outer periphery of the magnetic pole. 1. A magnetic head device comprising: a coil portion, and a magnetic head device configured to form a closed magnetic path between the magnetic tape running on the outer periphery of the rotating drum, the 7+iJ rotating drum, and the magnetic poles to transmit signals. （２）磁極が回転ドラムの外周面に形成されたことを特
徴とする特許請求の範囲第１項記載の磁気ヘッド装置。(2) A magnetic head device according to claim 1, wherein the magnetic pole is formed on the outer peripheral surface of the rotating drum.
JP7847683A 1983-05-04 1983-05-04 Magnetic head device Pending JPS59203212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7847683A JPS59203212A (en) 1983-05-04 1983-05-04 Magnetic head device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7847683A JPS59203212A (en) 1983-05-04 1983-05-04 Magnetic head device

Publications (1)

Publication Number Publication Date
JPS59203212A true JPS59203212A (en) 1984-11-17

Family

ID=13663061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7847683A Pending JPS59203212A (en) 1983-05-04 1983-05-04 Magnetic head device

Country Status (1)

Country Link
JP (1) JPS59203212A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733429B2 (en) * 1977-07-06 1982-07-16
JPS57189326A (en) * 1981-05-18 1982-11-20 Toshiba Corp Rotary magnetic head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733429B2 (en) * 1977-07-06 1982-07-16
JPS57189326A (en) * 1981-05-18 1982-11-20 Toshiba Corp Rotary magnetic head

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