JPS63224013A - Magnetic head for microcassette deck - Google Patents
Magnetic head for microcassette deckInfo
- Publication number
- JPS63224013A JPS63224013A JP5941887A JP5941887A JPS63224013A JP S63224013 A JPS63224013 A JP S63224013A JP 5941887 A JP5941887 A JP 5941887A JP 5941887 A JP5941887 A JP 5941887A JP S63224013 A JPS63224013 A JP S63224013A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- cores
- ferrite material
- microcassette
- head
- 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
- 239000000463 material Substances 0.000 claims abstract description 8
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 229910000702 sendust Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
Landscapes
- 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、マイクロカセットテープレコーダ等に使用さ
れるマイクロカセット用磁気ヘッドに関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic head for microcassettes used in microcassette tape recorders and the like.
従来の技術
近年、ヘッドホンステレオの爆発的流行にもみられるよ
うに、音響機器のパーソナルユース志向が強まシ、更に
アウトドアユースあるいは会議のメモ録音等が盛んにな
るにしたがって、軽薄短小型のオーディオテープレコー
ダの要求が高まってきている。テープレコーダのサイズ
は、使用するテープのサイズで制限されるので、よシ小
型のテープレコーダは、通常マイクロカセットテープを
使用するが、その際、一般的に用いられている磁気ヘッ
ドは、センダスト、あるいはパーマロイ等によ多構成さ
れた金属ヘッドである。Background of the Invention In recent years, audio equipment has become increasingly oriented toward personal use, as seen in the explosive popularity of headphone stereos, and as outdoor use and meeting memo recording have become more popular, light, thin, short, and compact audio tapes have become popular. Demand for recorders is increasing. The size of a tape recorder is limited by the size of the tape used, so smaller tape recorders usually use micro cassette tapes, and the commonly used magnetic heads are Sendust, Alternatively, it is a metal head made of permalloy or the like.
発明が解決しようとする問題点
しかし、従来用いられている金属ヘッドは、その素材で
ある金属の電気抵抗が小さいために、コアロスが大きく
なシ、それは記録電流を増大させることになり、したが
って消費電力の経済性に劣ると同時に、再生感度の劣化
をも招来する。Problems to be Solved by the Invention However, conventionally used metal heads have a large core loss due to the low electrical resistance of the metal material, which increases the recording current and therefore reduces consumption. In addition to being inferior in electricity economy, this also causes deterioration in reproduction sensitivity.
そこで、本発明は、上記従来の問題を解決するもので、
コアロスを小さくして電力消耗率を極めて少なくするこ
とができ、また高性能化を図るこ ′とができるよ
うにしたマイクロカセット用磁気ヘッドを提供しようと
するものである。Therefore, the present invention solves the above-mentioned conventional problems.
The object of the present invention is to provide a magnetic head for a microcassette in which the core loss can be reduced, the power consumption rate can be extremely reduced, and the performance can be improved.
問題点を解決するための手段
そして上記問題点を解決するための本発明の技術的な手
段は、作動ギャップを有するコアがフェライト材により
構成されたものである。The means for solving the problems and the technical means of the present invention for solving the above problems are that the core having the working gap is made of ferrite material.
作用 上記技術的手段による作用は次のようになる。action The effects of the above technical means are as follows.
すなわち、フェライト材を用いた磁気ヘッドは金属ヘッ
ドに比べて電気抵抗が大きく、コアロスを約１７２減少
させることができる。That is, a magnetic head using a ferrite material has a higher electrical resistance than a metal head, and can reduce core loss by about 172 points.
実施例 以下、本発明の実施例について説明する。Example Examples of the present invention will be described below.
一対のコアをフェライト材によシ形成し、この一対のコ
アを組合わせて作動ギャップを形成した。A pair of cores were formed from ferrite material, and the pair of cores were combined to form an operating gap.
このコアを用いて磁気ヘッドを構成した。A magnetic head was constructed using this core.
上記磁気ヘッドをマイクロカセットテープレコーダに塔
載し、電磁変換特性を測定した。但し、テープ速度、２
．４ｃｍ／Ｓ、バイアス周波数、８０ＫＨｚで、ヘッド
のギャップ長は約１μｍである。その結果、３１５Ｈｚ
、１６０ｎ ｗｂ７ｍを基準にとったときの上記本発明
の磁気ヘッドの再生感度は、従来のセンダストヘッドに
比べて２ｄＢ高＜、８ＫＨｚ７３１５Ｈｚの再生周波数
特性は２．５ｄＢ高くなった。The above magnetic head was mounted on a microcassette tape recorder, and the electromagnetic conversion characteristics were measured. However, tape speed, 2
．． At a bias frequency of 80 KHz and a bias frequency of 4 cm/S, the head gap length is approximately 1 μm. As a result, 315Hz
, 160n wb7m, the reproduction sensitivity of the magnetic head of the present invention was 2 dB higher than that of the conventional Sendust head, and the reproduction frequency characteristic of 8 KHz and 7315 Hz was 2.5 dB higher.
一方、録音特性としては、上記本発明の磁気ヘッドの標
準バイアス電流は１８０μＡであり、これは従来のセン
ダストヘッドの３９０μＡの半分以下、すなわち６ｄＢ
以上の高能率を有していることが確かめられ、８ＫＨｚ
／ＩＫＨｚの録音周波数特性としては、約４〜５ｄＢの
優位性を持つことが確かめられた。On the other hand, in terms of recording characteristics, the standard bias current of the magnetic head of the present invention is 180 μA, which is less than half of the 390 μA of the conventional Sendust head, or 6 dB.
It has been confirmed that it has a high efficiency of 8KHz.
/IKHz was confirmed to have an advantage of approximately 4 to 5 dB in recording frequency characteristics.
発明の効果
以上述べたように、本発明によれば、作動ギヤツブを有
するコアがフェライト材によシ構成されているので、従
来の金属ヘッドに比べて電気抵抗が大きく、コアロスを
減少させることができる。Effects of the Invention As described above, according to the present invention, since the core having the operating gear is made of ferrite material, the electric resistance is higher than that of the conventional metal head, and core loss can be reduced. can.
従って再生、録音特性共に優れた電磁変換特性を得るこ
とができ、また消費電力を著しく少なくして省エネルギ
ーを図ることができる。Therefore, it is possible to obtain excellent electromagnetic conversion characteristics in both playback and recording characteristics, and it is also possible to significantly reduce power consumption and save energy.
Claims (1)
れたことを特徴とするマイクロカセット用磁気ヘッド。A magnetic head for a microcassette, characterized in that a core having an operating gap is made of ferrite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5941887A JPS63224013A (en) | 1987-03-13 | 1987-03-13 | Magnetic head for microcassette deck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5941887A JPS63224013A (en) | 1987-03-13 | 1987-03-13 | Magnetic head for microcassette deck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63224013A true JPS63224013A (en) | 1988-09-19 |
Family
ID=13112698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5941887A Pending JPS63224013A (en) | 1987-03-13 | 1987-03-13 | Magnetic head for microcassette deck |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63224013A (en) |
-
1987
- 1987-03-13 JP JP5941887A patent/JPS63224013A/en active Pending
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