JPS6271014A - Manufacture of multi-track magnetic head - Google Patents

Manufacture of multi-track magnetic head

Info

Publication number
JPS6271014A
JPS6271014A JP14317386A JP14317386A JPS6271014A JP S6271014 A JPS6271014 A JP S6271014A JP 14317386 A JP14317386 A JP 14317386A JP 14317386 A JP14317386 A JP 14317386A JP S6271014 A JPS6271014 A JP S6271014A
Authority
JP
Japan
Prior art keywords
track
gap
sections
magnetic
magnetic 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
Application number
JP14317386A
Other languages
Japanese (ja)
Inventor
Jiro Torio
鳥生 次郎
Kazuhiko Nagao
永尾 一彦
Shinichiro Eguchi
江口 信一郎
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 JP14317386A priority Critical patent/JPS6271014A/en
Publication of JPS6271014A publication Critical patent/JPS6271014A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To process long-wavelength signals with a track having a wide gap section and short-wavelength signals with another track of a narrow gap section, by forming plural track sections under a condition where a pair of half bodies of a magnetic block are united to one body. CONSTITUTION:After the gap forming surfaces of half bodies 11a and 11b of a magnetic block finished with prescribed accuracy are finished to partially have stepped sections of desired level differences at optional locations, the half bodies 11a and 11b are joined to each other by welding by glass and comb- line working is performed on them so as to form track sections 14a and 14b and 15a-15d with prescribed intervals and widths. Then nonmagnetic layers 16a-16f are formed by filling the spaces between each track section with glass, etc. After the layers 16a-16f are formed, the united body is cut into two parts from a plane perpendicular to the joining plane of the half bodies 11a and 11b and each track section 14a and 14b and 15a-15d is separated into two parts. Then wide gap sections 12a and 12b and narrow gap sections 13a-13d are respectively installed to optional locations of the track sections 14a and 14b and 15a-15d and coils are independently wound around the sections below each track section. Thus a multi-track magnetic head 11 is obtained.

Description

【発明の詳細な説明】 この発明は、複数の広ギヤツプ部と複数の狭ギヤツプ部
とを有するマルチトラック磁気ヘッドの製造方法に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a multi-track magnetic head having a plurality of wide gap portions and a plurality of narrow gap portions.

従来のこの皿の磁気ヘッドは第1図に示すように、磁性
ブロック半体1m、lbを作動ギャップ2を介して一体
化接合後、所定の間隔でトラック81〜8fを設け、各
トラック間にガラス等の非磁性体4a〜4「を充填し、
狭ギヤツプ部である作動ギャップ21〜2rを形成する
ことにより、マルチトラックを有する磁気ヘッド1が得
られる。
As shown in Fig. 1, in the conventional magnetic head of this dish, after integrating and joining the magnetic block halves of 1m and lb through an operating gap 2, tracks 81 to 8f are provided at predetermined intervals, and there is a gap between each track. Filled with non-magnetic materials 4a to 4'' such as glass,
By forming the working gaps 21 to 2r, which are narrow gap portions, a magnetic head 1 having multi-tracks can be obtained.

なお、作動ギャップ21〜2fのセンターは直線状に配
夕11されていることはいうまでもない。
It goes without saying that the centers of the working gaps 21 to 2f are arranged in a straight line 11.

一般にマルチトラックを有する磁気ヘッドは、記録用(
書込み用)と再生用(読出し用)との一対のヘッドから
構成されるが、トラック幅とギャップ長が異なるだけで
同じ要素で構成されているので、以下では説明を簡略化
するため、第1図の1個の磁気ヘッド1で作用、動作を
説明する。
Generally, magnetic heads with multi-tracks are used for recording (
It is composed of a pair of heads, one for writing (for writing) and one for reproduction (for reading), but since they are composed of the same elements except for the track width and gap length, in the following, to simplify the explanation, we will use the first head. The function and operation of one magnetic head 1 shown in the figure will be explained.

各トラック8h〜8「の下部には所定の巻数からなるコ
イル(図示は省略)が装着されており、記録のときはこ
のコイル番こ電流を流すことにより各トラック8a〜8
「の作動ギャップ21〜2Cから磁束が磁気媒体に入り
、所定の間隔で記録された磁化トラックを磁気媒体上:
こ形成する。
A coil (not shown) consisting of a predetermined number of turns is attached to the lower part of each track 8h to 8'', and when recording, a current is applied to each of the tracks 8a to 8.
Magnetic flux enters the magnetic medium from the working gaps 21 to 2C and creates magnetized tracks recorded at predetermined intervals on the magnetic medium:
This is formed.

再生のときは逆に磁気媒体上に記録された磁化トラック
から作動ギャップ21〜2fを介して磁束がヘッドに入
り、コイルに交差した磁束は再生電圧信号として検1ピ
される。
Conversely, during reproduction, magnetic flux enters the head from the magnetized track recorded on the magnetic medium through the working gaps 21 to 2f, and the magnetic flux crossing the coil is detected as a reproduction voltage signal.

マルチトラック磁気ヘッドの場合、アナログ信号とディ
ジタル信号の両者を処理するときが多く、攪ヨすれば、
長波長信号と短波長信号を記録・再生する場合が多い、
第1図のように狭ギャップの在勤ギャップ2 m−2r
のみから構成されたマルチトラックを有する磁気ヘッド
1で長波長(アナログ信号)の信号を記録・再生する場
合、狭ギャップ(1μ山以下)で処理された信号は再生
出力が小さく、S/Nも悪いという欠点を有していた。
Multi-track magnetic heads often process both analog and digital signals, and if mixed,
In many cases, long wavelength signals and short wavelength signals are recorded and reproduced.
Narrow employment gap 2 m-2r as shown in Figure 1
When recording and reproducing long-wavelength (analog signals) signals with a magnetic head 1 having a multi-track composed of It had the disadvantage of being bad.

この発明は上記欠点を除去するためになされたもので、
同一ヘッド内で広ギヤツプ部と狭ギヤツブ部を有するト
ラック群を所要位置に設定し、広ギヤツプ部を有するト
ラックで長波長信号を、狭ギヤツプ部を有するトラック
で短波長信号を処理することを目的とした高精度で安価
なマルチトラック磁気ヘッドの製造方法を提供するもの
である。
This invention was made to eliminate the above-mentioned drawbacks.
The purpose is to set a group of tracks with a wide gap part and a narrow gear part at required positions within the same head, and process long wavelength signals with the track with the wide gap part, and short wavelength signals with the track with the narrow gap part. The present invention provides a method for manufacturing a highly accurate and inexpensive multi-track magnetic head.

以下この発明について説明する。This invention will be explained below.

第2図はこの発明の一実施例によって製造された磁気ヘ
ッドを示す平面図で、所定の精度に仕上げられた磁性ブ
ロック半体11 m、 1 l bのギャップ形成面を
任意の位置(図では積層トラック部群の両端部)でさら
に部分的に後述の広ギヤツプ部を形成するため所要の深
さに段付状に加工仕上げた後、ガラス溶着で一体化接合
し″、所定の間隔と幅でトラック部14m、14bおよ
び15a〜15dを形成するようにくし歯加工を施し、
このくし歯加工で除去された部分内、すなわち各トラッ
ク部間にガラス等を充填して非磁性層16a〜16fを
形成し、その後、磁性ブロック半体11a〜llbの接
合面と直角に切断して各トラック部14m、14bおよ
び15 a 〜15 dを分離せしめることにより、任
意の位置に広ギヤツプ部12&t2bと狭ギヤツプ部l
aa〜IJIdとを有するトラック部14m、14’)
およびl 5 a 〜15 dを形成し、各トラック部
14m、14bおよび15 m ・” 15 dの下部
1こはそれぞれ独立してコイルを装着することによりマ
ルチトラックを有する磁気ヘッド11が得られる。また
、このように形成された各ギャップ部のセンターは当然
のことながら9.イン・ライン(直線状に配列)なって
おり、高精【釦なマルチトラックを有する磁気へラド1
1が構成される。
FIG. 2 is a plan view showing a magnetic head manufactured according to an embodiment of the present invention, in which the gap forming surface of the magnetic block halves 11 m, 1 l b finished to a predetermined precision can be positioned at any position (in the figure). Both ends of the laminated track group) are further partially machined into a stepped shape to the required depth to form the wide gap portion described later, and then integrated and joined by glass welding, and the gap is set to the specified spacing and width. comb teeth processing is performed to form track portions 14m, 14b and 15a to 15d,
Nonmagnetic layers 16a to 16f are formed by filling glass or the like in the portions removed by this comb processing, that is, between each track portion, and then cutting the magnetic block halves 11a to llb at right angles to the bonding surfaces. By separating the track portions 14m, 14b and 15a to 15d, the wide gap portion 12&t2b and the narrow gap portion l can be placed at any desired position.
Track portions 14m, 14' having aa to IJId)
A magnetic head 11 having multi-tracks can be obtained by forming coils 14m, 14b and 15m.'' 15d and independently attaching coils to the lower part of each track portion 14m, 14b and 15m.''15d. In addition, the center of each gap formed in this way is of course 9.in-line (arrayed in a straight line), which makes it possible to create a magnetic helad with high-precision multi-tracks.
1 is configured.

記録(書込み)、再生(読出し・)過程は、一対の磁気
ヘッドで行う場合が多いが、ここでは説明を簡素化する
ため、第2図を用いてその作用、動作を説明する。
Recording (writing) and reproducing (reading) processes are often performed using a pair of magnetic heads, but in order to simplify the explanation here, the function and operation will be explained using FIG. 2.

記録の場合、各トラック部14m、 14bおよび15
a〜15dの下部に装着されているコイル(図は省略)
に所定の[流を流すと、コイルに誘引された磁束のうち
、長波長:言号(アナログ信号)分はトラック部14a
、14bの広ギヤツプ部12m、12bより、短波長信
号(ディジタル信号)分はトラック部16畠〜15dの
狭ギヤツプ部18a〜18dより磁気媒体に入り所定位
置に磁化トランクを形成させる。
For recording, each track section 14m, 14b and 15
Coils installed at the bottom of a to 15d (figure omitted)
When a predetermined current is applied to the coil, out of the magnetic flux attracted to the coil, the long wavelength: word (analog signal) is transferred to the track portion 14a.
, 14b, the short wavelength signal (digital signal) enters the magnetic medium through the narrow gap portions 18a to 18d of the track portions 16 to 15d, forming a magnetized trunk at a predetermined position.

一方、再生の場合は、上記動作の逆の作用が働き、磁気
媒体より長波長信号は広ギヤツプ部12m、12bから
、短波長信号は狭ギヤツプ部181〜18dから磁束が
各トラック部14m、14bおよび15畠〜15dに入
り、コイルに誘起された電圧信号を検出する。
On the other hand, in the case of reproduction, the opposite effect of the above operation works, and the magnetic flux is transmitted from the wide gap parts 12m and 12b for longer wavelength signals than the magnetic medium, and from the narrow gap parts 181 to 18d for short wavelength signals to each track part 14m and 14b. and 15-15d, and detect the voltage signal induced in the coil.

このように、波長の異なる信号を広ギヤツプ部12m、
12bと狭ギヤツプ部18aN18dとをそれぞれ作動
させた記録・再生を行うことが■能となるので、特注の
よい高精度なマルチトラックを有する磁気ヘッド11を
提供することができる。
In this way, signals with different wavelengths are transferred to the wide gap section 12m.
12b and the narrow gap portion 18aN18d can be respectively operated for recording and reproducing. Therefore, it is possible to provide a custom-made magnetic head 11 having highly accurate multi-tracks.

段付加工を施したギャップ突合せ面はその深さに相当す
る分だけ狭ギヤツプ部181〜18dよりも広いギャッ
プとなり段付部分の深さで広ギヤツプ部12m、12b
の寸法を規制できる1段付加工は化学エツチング、砥粒
番こよる研磨等の方法で行うことができ、また、段付部
分の幅に関してはギキツプ形成後、トラック分離加工を
けうので、トラック幅よりやや幅広に段付加工をしてお
けば良く、加工が容易で見る。なお、狭ギヤツプ部18
a〜184の製造については従来と同様であるのでその
詳細は省略した。
The stepped gap abutment surface becomes a gap wider than the narrow gap parts 181 to 18d by an amount corresponding to the depth thereof, and the wide gap parts 12m and 12b are formed at the depth of the stepped part.
One step processing that can control the dimensions of the step can be performed by methods such as chemical etching and abrasive grain polishing.The width of the stepped portion is also determined by track separation processing after the gap is formed. It would be better to make it slightly wider with steps, which makes it easier to process. Note that the narrow gap portion 18
Since the manufacture of a to 184 is the same as the conventional one, the details are omitted.

第8図はこの発明の他の実施例によって製造された磁気
ヘッドを示す平面図である。第2図の実施例が広ギヤツ
プ部12a、12bを有するトラック部14m、14b
を磁気ヘッド11の両端部に設定したが、この実施例に
おける磁気ヘッド21では、所要の位置に広ギャップ2
2a〜22dを有するトラック部24a〜24dと狭ギ
ヤツプ部28a〜28dを有するトラック部251〜2
5dを設定したもので、所要のトラック幅の各トラック
部24 # 〜24 dと25 a 〜25 dと、こ
れら各トラック部241〜24dと25a〜25dを分
離するガラス等からなる非磁性層部E7a〜2?hから
構成される高精度で、安価、カッn 性の良いマルチト
ラックを有する磁気ヘッド21を得ることができろ。
FIG. 8 is a plan view showing a magnetic head manufactured according to another embodiment of the invention. The embodiment of FIG. 2 has track portions 14m and 14b having wide gap portions 12a and 12b.
are set at both ends of the magnetic head 11, but the magnetic head 21 in this embodiment has wide gaps 2 at required positions.
Track portions 24a-24d having 2a-22d and track portions 251-2 having narrow gap portions 28a-28d.
5d, each track portion 24 # to 24 d and 25 a to 25 d has a required track width, and a non-magnetic layer portion made of glass or the like separates each of these track portions 241 to 24 d and 25 a to 25 d. E7a~2? It is possible to obtain a magnetic head 21 having a multi-track with high precision, low cost, and good operability.

なお、上記実施例では2つの磁性ブロック半体21m、
21bの両方に段付加工を施すものについて説明したが
、この発明はこれに限らず、いずれか一方の広ギヤツプ
部分にだけ段付加工を施した場合においても同様の効果
を得ることができる。
In addition, in the above example, two magnetic block halves 21m,
21b has been described, the present invention is not limited to this, and the same effect can be obtained even when the step is applied to only one of the wide gap portions.

以上説明したようにこの発明によれば、狭ギヤツプ部と
広ギヤツプ部を有する複数のトラック部を一対の磁性ブ
ロック半体から一体のままで形成したので、記録波長の
異なる信号の処理を任意の位置で、広ギヤツプ部と狭ギ
ヤツプ部をそれぞれ作動させて記録・再生を行うことが
でき、さらに各ギャップ部のイン・ラインが高精度に確
保できるので、テープの互換性が確保でき、かつ特性良
好なるマルチトラックを有する磁気ヘッドを安価に提供
することができる利点がある。
As explained above, according to the present invention, a plurality of track sections having a narrow gap section and a wide gap section are integrally formed from a pair of magnetic block halves, so that signals having different recording wavelengths can be processed in any desired manner. Recording and playback can be performed by operating the wide gap section and the narrow gap section at the same position, and since the in-line of each gap section can be ensured with high precision, tape compatibility can be ensured and the characteristics There is an advantage that a magnetic head with good multi-track performance can be provided at low cost.

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

681図は従来のマルチトラックを有する磁気ヘッドの
平面図、第2図はこの発明の一実施例器ζよって製造さ
れた磁気ヘッドを示す平面図、第8図はこの発明の他の
実施例によって製造された磁気ヘッドを示す平面図であ
る。 図中、11.21は磁気ヘッド、l1m、110および
21m、2Xbは磁性ブロック半体、l2m、12bお
よび22a〜22dは広ギヤツプ部、18a〜18dお
よび28a〜28dは狭ギヤツプ部、14m、14bお
よび24a 〜24dは広ギャップを有するトラック部
、15a〜15rlおよび25a〜25dは狭ギャップ
を有するトラック部、16m−16fおよび27a〜2
7hは非磁性層である。 代理人  大 岩 増 雄(外2名) 第1図 第2図   第3図 手続補正書(方式) 20発明の名称 マルチトラック磁気へ・ンドの製造方法3、補正をする
者 事件との関係 特許出願人 住 所    東京都千代田区丸の内二丁目2番3号名
 称  (601ン三菱電機株式会社代表者 志 岐 
守 哉 4、代理人 6、補正命令の日付 6、補正の対象 明細書の全文 7、補正の内容 (1)願書に最初に添付した明細書の浄書・別紙のとお
り(内容に変更なし) 以  上
681 is a plan view of a conventional magnetic head having multi-tracks, FIG. 2 is a plan view showing a magnetic head manufactured by one embodiment of the present invention, and FIG. 8 is a plan view of a magnetic head manufactured by another embodiment of the present invention. FIG. 3 is a plan view showing a manufactured magnetic head. In the figure, 11.21 is a magnetic head, 11m, 110 and 21m, 2Xb are half magnetic blocks, 12m, 12b and 22a-22d are wide gap parts, 18a-18d and 28a-28d are narrow gap parts, 14m, 14b and 24a-24d are track portions with wide gaps, 15a-15rl and 25a-25d are track portions with narrow gaps, 16m-16f and 27a-2
7h is a nonmagnetic layer. Agent Masuo Oiwa (2 others) Figure 1 Figure 2 Figure 3 Procedural amendment (method) 20 Title of invention Method for manufacturing multi-track magnetic head 3, relationship to the case of the person making the amendment Patent Applicant Address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Mitsubishi Electric Corporation Representative Shiki
Moriya 4, Agent 6, Date of amendment order 6, Full text of the specification to be amended 7, Contents of the amendment (1) As per the engraving and attached sheet of the specification originally attached to the application (no change in content): Up

Claims (1)

【特許請求の範囲】[Claims] 一対の磁性ブロック半体のギャップを形成する面の少な
くとも一方に、広ギャップと狭ギャップを形成するため
溝の深さを変えた段付加工をする工程と、上記一対の磁
性ブロック半体をガラス溶着して一体化接合し、上記溝
加工部に作動ギャップを形成する工程と、所定の間隔で
上記作動ギャップを有した複数のトラック部を形成する
ように上記磁性ブロック半体をくし歯加工する工程と、
上記くし歯加工で除去された部分に非磁性層を充填する
工程と、上記一対の磁性ブロック半体の接合面と直角に
切断してトラック分離することによりインラインに互に
独立した広ギャップ部と狭ギャップの部の複数のトラッ
ク部を形成する工程と、分離された各トラックの下部に
それぞれ独立してコイルを装着する工程とを備えたマル
チトラック磁気ヘッドの製造方法。
Stepping is performed on at least one of the gap-forming surfaces of the pair of magnetic block halves by changing the depth of the groove to form a wide gap and a narrow gap, and the pair of magnetic block halves is made of glass. A step of welding and joining together to form an operating gap in the grooved portion, and processing the magnetic block halves with comb teeth so as to form a plurality of track portions having the operating gaps at predetermined intervals. process and
A step of filling a non-magnetic layer into the portion removed by the comb processing, and separating the tracks by cutting the pair of magnetic block halves at right angles to the bonding surface, thereby forming independent wide gap portions in-line. A method for manufacturing a multi-track magnetic head, comprising the steps of forming a plurality of track portions in a narrow gap portion, and independently mounting a coil at the bottom of each separated track.
JP14317386A 1986-06-19 1986-06-19 Manufacture of multi-track magnetic head Pending JPS6271014A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14317386A JPS6271014A (en) 1986-06-19 1986-06-19 Manufacture of multi-track magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14317386A JPS6271014A (en) 1986-06-19 1986-06-19 Manufacture of multi-track magnetic head

Publications (1)

Publication Number Publication Date
JPS6271014A true JPS6271014A (en) 1987-04-01

Family

ID=15332613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14317386A Pending JPS6271014A (en) 1986-06-19 1986-06-19 Manufacture of multi-track magnetic head

Country Status (1)

Country Link
JP (1) JPS6271014A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531010A (en) * 1976-06-24 1978-01-07 Mitsubishi Electric Corp Multi-element magnetic head and its manufacture
JPS5441121A (en) * 1977-09-07 1979-04-02 Hitachi Ltd Recording-playback compound head for reversing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531010A (en) * 1976-06-24 1978-01-07 Mitsubishi Electric Corp Multi-element magnetic head and its manufacture
JPS5441121A (en) * 1977-09-07 1979-04-02 Hitachi Ltd Recording-playback compound head for reversing

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