JPS5897121A - Construction of magnetic tape head - Google Patents

Construction of magnetic tape head

Info

Publication number
JPS5897121A
JPS5897121A JP19498281A JP19498281A JPS5897121A JP S5897121 A JPS5897121 A JP S5897121A JP 19498281 A JP19498281 A JP 19498281A JP 19498281 A JP19498281 A JP 19498281A JP S5897121 A JPS5897121 A JP S5897121A
Authority
JP
Japan
Prior art keywords
tape
head
magnetic
contact
head surface
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
JP19498281A
Other languages
Japanese (ja)
Inventor
Yuichi Hayakawa
早川 雄一
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP19498281A priority Critical patent/JPS5897121A/en
Publication of JPS5897121A publication Critical patent/JPS5897121A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/187Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features

Landscapes

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

Abstract

PURPOSE:To provide function which can introduce a tape to the position of the specified head surface, by increasing the friction of the magnetic recording and reproduction tape at the magnetic head surface in contact with the center of the tape more than that at parts except the center of the tape. CONSTITUTION:In order to increase the friction of the surface of a magnetic head 1 in contact with the lengthwise center of a magnetic tape 4 more than that of the head 1 in contact with both ends of the tape 4, to make the incident angle of the tape 4 to a recording gap 2 and a reproduction gap 3 of the head 4 constant and to suppress the vibration at running of the tape 4, and to increase the friction of parts out of contact parts 5a-5d on the surface of the head 1 to the tape 4, at least one part, than a part 8 in contact with a part 8 in contact with both the ends of the tape 4, a lubricant member such as BN is filled in the part 8. Or, a member increasing the friction is imbedded or bonded to a part 7b, or a center 7c of the head 1 is projected toward the tape 4 from both the ends to obtain larger friction and to introduce the tape to the center automatically. Thus, the damages to tape ends can be prevented.

Description

【発明の詳細な説明】 本発明は、磁気記録拘生用テープを、ヘッド表面の所定
の位置に誘導する機能を有した磁気テープヘッドの構造
に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a magnetic tape head having a function of guiding a magnetic recording restraining tape to a predetermined position on the head surface.

従来、磁気テープ装置に使用される磁気テープヘッドは
、テープ幅方向に対して高精度な、テープとヘッドとの
相対位置関係が要求されている。
Conventionally, magnetic tape heads used in magnetic tape devices are required to have a highly accurate relative positional relationship between the tape and the head in the tape width direction.

しかしこの種の磁気テープヘッドはヘッド自身にテープ
ガイド機能を有しておらず、もっばら、ヘッド近傍に設
置されたテープをガイドするテープタ ガイド、テープを走行制御するキャプスtンあるいはヘ
ッドを支持する機構等によシテープガイド機能がまかせ
られていた。このため、磁気テープヘッドは前記テープ
ガイド、キャプスタンおよびヘッド支持機構の、傾きな
どの設置誤差で生ずるヘッドとテープとの相対位置の変
動をヘッド自身で修正することができ危かった。
However, this type of magnetic tape head does not have a tape guide function in the head itself, and mainly consists of a tape guide installed near the head that guides the tape, a capstone that controls the running of the tape, or a head support. The tape guide function was left to the tape guide function. For this reason, the magnetic tape head cannot correct fluctuations in the relative position between the head and the tape caused by installation errors such as inclination of the tape guide, capstan, and head support mechanism by itself.

一方、オーディオ−の分野では、実開昭52−1208
23および実開昭54−141925号公報のように、
ヘッドにテープガイド機構を取付けた例もめゐが、テー
プの両側端をはさんでガイドする方式のため、テープ側
端の摩耗によりテープ寿命を短くしたシ、また、前記の
ようにテープ側端が押されるために、テープがテープ幅
方向に歪曲し、多素子磁気ヘッドの場合には、テープ側
端近傍のトラックとテープ中央部のトラックとで、テー
プとヘッドとの密着性が異なシ、トラック間で不均一な
記録再生を行なうという欠点があった。
On the other hand, in the field of audio,
23 and Utility Model Application Publication No. 54-141925,
There is also an example of a tape guide mechanism attached to the head, but since the tape is guided by sandwiching both sides of the tape, the tape life is shortened due to wear on the tape side edges, and as mentioned above, the tape side edges are Due to the pressure, the tape is distorted in the tape width direction, and in the case of a multi-element magnetic head, the adhesion between the tape and the head is different between tracks near the edge of the tape and tracks in the center of the tape. There was a drawback that recording and reproduction were performed unevenly between the two.

本発明の目的は前記欠点を解決し、ヘッド自身にテープ
ガイド機能を持九せ九磁気テープヘッドの構造を提供す
ることにある。
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks and provide a magnetic tape head structure in which the head itself has a tape guiding function.

本発明は、磁気記録再生用テープの長手方向に延びる中
央部分と、これと接触するヘッド表面との摩擦力を、前
記テープ中央部を除いたテープと、これと接触するヘッ
ド表面との摩擦力に比較して、大きくしたことによシ構
成され、さらに具体的には、(1)前記テープ中央部を
除いたテープと接触するヘッド表面に、潤滑材料を充填
した金属を前記テープの中央線に対して対称の位置に設
置することであシ、あるいは、(2)前記テープ中央部
と接触するヘッド表面に、前記テープ中央部を除いたテ
ープと接触するヘッド表面よシも、テップとの摩擦係数
の大きな材料を埋め込み、接着あるいはめつきすること
であシ、あるいは、<8)前記テープ中央部と接触する
ヘッド表面を、前記テープ中央部を除いたテープと接触
するヘッド表面よシも、テープ側へ突き出したことにょ
シ、構成される。
The present invention replaces the frictional force between the longitudinally extending central portion of a magnetic recording/reproducing tape and the head surface that contacts this with the frictional force between the tape excluding the central portion of the tape and the head surface that contacts this. More specifically, (1) metal filled with a lubricating material is applied to the head surface that contacts the tape, excluding the central portion of the tape, along the center line of the tape. (2) The head surface in contact with the tape center part may be placed in a symmetrical position with respect to the tape, or (2) the head surface in contact with the tape other than the tape center part may also be installed in This can be done by embedding, gluing or plating a material with a large coefficient of friction, or <8) The head surface in contact with the tape center can be made different from the head surface in contact with the tape excluding the tape center. , it is constructed by protruding toward the tape side.

?−CDtj&気チー:y’ヘッドは磁気記録再生テー
プの長手方向に延びる中央部と接触するヘッド表面の摩
擦力を前記テープの両端と接触するヘッド表面の摩擦力
を大きくすることにょヤ、前記テープを所定のヘッド位
置にn導する作用を設けたものである。
? -CDtj&Qi:y' The head is designed to increase the frictional force on the head surface that contacts the longitudinally extending central portion of the magnetic recording/reproducing tape, and the frictional force on the head surface that contacts both ends of the tape. This is provided with the function of guiding n to a predetermined head position.

次に本発明の実施例について、図面を参照して駅間する
Next, examples of the present invention will be explained with reference to the drawings.

第1図は、本実施例の磁気テープ装置用磁気へ、ドを示
す。第1図において、この磁気ヘッドは記録ギャップ2
および拘生ギャップ3を有していて、磁気テープ4が両
ギャップ2.3上を走行することによシ磁気記録再生を
行なうが、両ギャップ2.3への、磁気テープ4の入射
角をヘッドの摩耗量に対して一定にするため、および磁
気テープ4の走行時の振動を抑制するために、テープ4
との、ヘッド表面の接触部分を、5m、5b+5ce5
dの4ケ所が設けられている。この接触部分5a〜5d
の少なくとも一ケ所、たとえ#:L′接触部分5aおよ
び5dはテープ4の長手方向に延びる中央部6と接触す
るヘッド表面7の摩擦力がテープ4の両端部と接触する
ヘッド表面の摩擦力よシ大きくする手段を有したことで
ある。一般に、2m体間に作用する摩擦力)゛は、摩擦
係数をμ、荷重をWとすると(1)式で表わされる。
FIG. 1 shows the magnetic field for the magnetic tape device of this embodiment. In FIG. 1, this magnetic head has a recording gap of 2.
and a rigid gap 3, and magnetic recording and reproduction is performed by the magnetic tape 4 running over both gaps 2.3, but the incident angle of the magnetic tape 4 to both gaps 2.3 In order to keep the amount of head wear constant and to suppress vibrations when the magnetic tape 4 is running, the tape 4
The contact area of the head surface is 5m, 5b+5ce5
There are four locations (d). These contact parts 5a to 5d
At least one of the contact portions 5a and 5d, for example #:L', is such that the frictional force of the head surface 7 in contact with the longitudinally extending central portion 6 of the tape 4 is greater than the frictional force of the head surface in contact with both ends of the tape 4. This means that we have a means to increase the size. Generally, the frictional force acting between 2m bodies is expressed by equation (1) where μ is the friction coefficient and W is the load.

)=μW           ・旧・・(1)(1)
式の摩擦係数μを利用して、磁気テープの長手方向の中
央部と両端部とに対してテープ4との摩擦力に差をつけ
た磁気テープヘッドを用いることによシ、走行する磁気
テープが磁気テープヘッドの中央部に誘導される。
)=μW ・Old...(1)(1)
By using a magnetic tape head that creates a difference in the frictional force with the tape 4 between the center and both ends of the magnetic tape in the longitudinal direction, using the coefficient of friction μ in the equation, the running magnetic tape can be is guided to the center of the magnetic tape head.

次に第2図は本発明の第1の実施例を示す。この実施例
はテープ4の両端部に接触するヘッド表面8に、たとえ
ば窒化ホウ素(HN)などの潤滑材料を充填した金属を
設置したもので、ヘッド表面8の形状はテープ中央線6
に対して線対称とし、テープ4の中央部が接触するヘッ
ド表面7!1の摩擦力よシ小さくすることにより磁気テ
ープ4をヘッド表面7a部に誘導することができる。
Next, FIG. 2 shows a first embodiment of the present invention. In this embodiment, a metal filled with a lubricating material such as boron nitride (HN) is installed on the head surface 8 that contacts both ends of the tape 4, and the shape of the head surface 8 is similar to the tape center line.
The magnetic tape 4 can be guided to the head surface 7a by making the magnetic tape 4 symmetrical with respect to the head surface 7a and by making the frictional force smaller than that of the head surface 7!1 with which the central portion of the tape 4 comes into contact.

第3図は本発明の第2の実施例を示す。仁の実施例は第
2図の実施例と同じく摩擦係数μを利用したものであシ
、テープ中央部と接触するヘッド表面7b部に、テープ
との*m係数の大きな材料を、埋め込み、接着、あるい
はめっきしたものである。仁のヘッド表面7bの形状社
、テープ4の中央線6に対して線対称の位置にもうけら
れたもので、磁気テープ4をヘッド表面7bに誘導する
ことができる。
FIG. 3 shows a second embodiment of the invention. Jin's embodiment utilizes the coefficient of friction μ, similar to the embodiment shown in FIG. , or plated. The shape of the head surface 7b is symmetrical to the center line 6 of the tape 4, and the magnetic tape 4 can be guided to the head surface 7b.

#I4図は、第1図のX−X断面を示し九本発明の第3
の実施例を示す。この第3の実施例は(1)式の荷重W
を利用して摩擦力に差をつけた実施例で第1図における
テープ4との接触部分5a、5b、5c、5dの少なく
とも1部分に、テープ4の中央部と接触するヘッド表面
7Cを他のヘッド表面9よりも、テープ4の方向に突き
出したものである。
Figure #I4 shows the XX cross section of Figure 1 and the third aspect of the present invention.
An example is shown below. This third embodiment is the load W of equation (1)
In this embodiment, a head surface 7C that is in contact with the center of the tape 4 is provided on at least one of the contact areas 5a, 5b, 5c, and 5d with the tape 4 in FIG. It protrudes in the direction of the tape 4 from the head surface 9 of the head.

これによシ、本実施例はヘッド表面7cにおいて、テー
プ4から受ける荷重が、ヘッド表面9が受ける荷重より
も大きくなシ、摩擦力が大きくなるので、テープ4が磁
気ヘッドの中央部へ誘導される。
Accordingly, in this embodiment, the load received from the tape 4 on the head surface 7c is greater than the load received on the head surface 9, and the frictional force increases, so that the tape 4 is guided to the center of the magnetic head. be done.

以上のように、本発明の実施例はヘッドの近傍に設置さ
れている、前記テープガイド、キャプスタン、およびヘ
ッド支持機構の設置誤差によって生ずるヘッドとテープ
との相対位置の変動を、ヘッド自身によって除去するこ
とができ、しかもテープ側端面を損傷することもない。
As described above, the embodiment of the present invention uses the head itself to compensate for fluctuations in the relative position of the head and tape caused by installation errors of the tape guide, capstan, and head support mechanism installed near the head. It can be removed without damaging the tape side end surface.

なお、本発明の実施例はこれら第1〜第3の実施例を組
み合せて、さらに効果的なテープ誘導機能をもたせられ
ることが可能であることは言うまでもない。
It goes without saying that the embodiment of the present invention can be provided with a more effective tape guiding function by combining the first to third embodiments.

本発明は、以上説明したように、磁気記録貴生用テープ
の中央部と接触するヘッド表面の、前記テープとの摩擦
力を大きくすることによシ、前記テープ側端面を*mさ
せることなく、前記テープを所定のヘッド表面の位置へ
誘導することができる0
As explained above, the present invention increases the frictional force between the head surface that contacts the central part of the magnetic recording tape and the tape, thereby preventing the side end surface of the tape from being distorted. The tape can be guided to a predetermined head surface position.

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

第1図は本発明の実施例である磁気テープ装置の磁気ヘ
ッドを示す斜視図、第2図、第3図および第4図は本発
明による第1.第2および第3の実施例を示す平面図で
ある。 1・・・・・・ヘッド本体、2.3・・・・・・ギャッ
プ、4・・・・・・テープ、5a、5b、5c、5d・
・・・・・ヘッド表面のテープとの接触部、6・・・・
・・テープの中心森%7a17b、7c・・・・・・テ
ープの中央部と接触するヘッド表面、8.9・・・・・
・テープの両端部と接触するヘッド表面。 z      3 第4図
FIG. 1 is a perspective view showing a magnetic head of a magnetic tape device according to an embodiment of the present invention, and FIGS. FIG. 7 is a plan view showing second and third embodiments. 1... Head body, 2.3... Gap, 4... Tape, 5a, 5b, 5c, 5d.
...Contact area with tape on head surface, 6...
...Central forest of tape % 7a17b, 7c...Head surface in contact with center of tape, 8.9...
・The head surface that comes into contact with both ends of the tape. z 3 Figure 4

Claims (1)

【特許請求の範囲】 (1)磁気記録再生用テープの長手方向に延びる中央部
分とこれと接触するヘッド表面とのII#擦力を、前記
テープ中央部を除いたテープとこれと接触するヘッド表
面との摩擦力に比較して、大きくしたことを%徴とする
磁気テープヘッドの構造。 (2)  特#!FN求の範囲(1)項において、前記
テープ中央部を除いたテープと接触するヘッド表面に、
@滑材料を充填した金属を前記テープの中央線に対して
対称の位置に設置したことを特徴とする磁気テープヘッ
ドの構造。 (8)  特許請求の範囲(1)項において、前記テー
プ中央部と接触するヘッド表面に、前記テープ中央部を
除いたテープと接触するヘッド表面よりも、テープとの
摩擦係数の大きな材料を埋め込み、接着あるいはめっき
したことを特徴とする磁気テープヘッドの構造。 (4)特許請求の範囲(1)項において、前記テープ中
央部と接触するヘッド表面を、前記テープ中央部を除い
たテープと接触するヘッド表面よりも、テープ側へ突き
出したことを特徴とする磁気テープヘッドの構造。
[Scope of Claims] (1) The II# friction force between the longitudinally extending central portion of a magnetic recording/reproducing tape and the head surface that contacts this is calculated by applying the II# friction force between the tape excluding the central portion of the tape and the head that contacts this. The structure of a magnetic tape head is characterized by an increase in frictional force compared to the surface. (2) Special #! In the range (1) of the FN requirement, on the head surface that comes into contact with the tape except for the central part of the tape,
A structure of a magnetic tape head, characterized in that a metal filled with a sliding material is placed at a symmetrical position with respect to the center line of the tape. (8) In claim (1), a material having a larger coefficient of friction with the tape is embedded in the head surface that contacts the tape center portion than the head surface that contacts the tape excluding the tape center portion. , a structure of a magnetic tape head characterized by adhesive or plating. (4) Claim (1), characterized in that the head surface that contacts the tape center portion protrudes further toward the tape than the head surface that contacts the tape excluding the tape center portion. Structure of magnetic tape head.
JP19498281A 1981-12-03 1981-12-03 Construction of magnetic tape head Pending JPS5897121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19498281A JPS5897121A (en) 1981-12-03 1981-12-03 Construction of magnetic tape head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19498281A JPS5897121A (en) 1981-12-03 1981-12-03 Construction of magnetic tape head

Publications (1)

Publication Number Publication Date
JPS5897121A true JPS5897121A (en) 1983-06-09

Family

ID=16333568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19498281A Pending JPS5897121A (en) 1981-12-03 1981-12-03 Construction of magnetic tape head

Country Status (1)

Country Link
JP (1) JPS5897121A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825317A (en) * 1986-07-25 1989-04-25 Siemens Aktiengesellschaft Mechanism for damping tape vibrations in a magnetic tape recorder
US5034838A (en) * 1990-05-08 1991-07-23 Eastman Kodak Company Bi-directional read while write magnetic head assembly having a wear avoidance contour

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825317A (en) * 1986-07-25 1989-04-25 Siemens Aktiengesellschaft Mechanism for damping tape vibrations in a magnetic tape recorder
US5034838A (en) * 1990-05-08 1991-07-23 Eastman Kodak Company Bi-directional read while write magnetic head assembly having a wear avoidance contour

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