KR100200805B1 - Magnetic head and method of manufacturing the same - Google Patents
Magnetic head and method of manufacturing the same Download PDFInfo
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- KR100200805B1 KR100200805B1 KR1019920018177A KR920018177A KR100200805B1 KR 100200805 B1 KR100200805 B1 KR 100200805B1 KR 1019920018177 A KR1019920018177 A KR 1019920018177A KR 920018177 A KR920018177 A KR 920018177A KR 100200805 B1 KR100200805 B1 KR 100200805B1
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- magnetic
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- 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
- G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
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- 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
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
- G11B5/23—Gap features
- G11B5/232—Manufacture of gap
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Abstract
본 발명은 자기헤드 및 그 제조방법에 관한 것이다. 본 발명은, 한쌍의 비자성기판중 적어도 일측 비자성기판의 내측면 양측에, 상기 자기갭 부위의 다층자성층의 폭보다 다른 부위의 다층자성층의 폭이 상대적으로 넓게 형성되도록 하는 인입구가 각각 형성된 자기헤드를 제공함에 특징이 있다. 또한 비자성기판의 상면에 소정간격으로 인입홈을 복수개 형성하고, 상기 인입홈에 자성막과 절연막을 순차적으로 복수층 적층형성 한 다음, 상기 비자성기판의 전면을 덮도록 자성막과 절연막을 순차적으로 복수층 적층 형성하는 공정과 ; 상기 공정에 의해 제조된 기판을 복수개 적층하고 융착하여 코어블록을 형성하고, 이 코어블록을 소정패턴으로 절단하여 복수개의 코어반체블록을 형성하는 공정과 ; 상기 코어반체블록에 각각 코일권선홈과 자기갭을 형성하고 이들을 접착시킨 다음 절단하여 한쌍의 코어반체를 형성하는 공정;을 포함하여 된 자기헤드의 제조방법을 제공하는데 있다. 따라서 고밀도 기록이 가능하고, 재생효율이 우수한 자기헤드를 얻을 수 있게 된다.The present invention relates to a magnetic head and a method of manufacturing the same. According to the present invention, a magnetic inlet is formed on both sides of at least one of the nonmagnetic substrates of the pair of nonmagnetic substrates so that the width of the multilayer magnetic layer at a portion different from the width of the multilayer magnetic layer of the magnetic gap portion is relatively wider. It is characterized by providing a head. In addition, a plurality of inlet grooves are formed on the upper surface of the nonmagnetic substrate at predetermined intervals, and a plurality of layers of magnetic films and insulating films are sequentially formed in the inlet grooves, and then the magnetic film and the insulating film are sequentially covered to cover the entire surface of the nonmagnetic substrate. Laminating and forming a plurality of layers; Stacking and fusing a plurality of substrates produced by the above process to form a core block, and cutting the core block into a predetermined pattern to form a plurality of core half blocks; Forming a coil winding groove and a magnetic gap in each of the core half block, and then bonding them and cutting them to form a pair of core half body; to provide a method of manufacturing a magnetic head. Therefore, high density recording is possible and a magnetic head excellent in reproduction efficiency can be obtained.
Description
제1도는 종래의 자기헤드를 도시한 사시도.1 is a perspective view showing a conventional magnetic head.
제2도는 본 발명에 따른 자기헤드를 도시한 사시도.2 is a perspective view of a magnetic head according to the present invention;
제3도 (a)내지 (g)는 본 발명에 따른 자기헤드의 제조방법을 도시한 공정도.3 (a) to (g) are process drawings showing a method of manufacturing a magnetic head according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
11,12 : 한쌍의 코어반체 13 : 자성막11,12: pair of core half body 13: magnetic film
14 : 절연막 15 : 다층자성층14 Insulation Film 15 Multilayer Magnetic Layer
16,16' : 비자성기판 17 : 코일권선홈16,16 ': non-magnetic substrate 17: coil winding groove
18 : 자기갭 19 : 코어블록18: magnetic gap 19: core block
19a, 19b : 코어반체블록19a, 19b: core half block
본 발명은 자기헤드 및 그 제조방법에 관한 것으로서, 특히 고밀도의 기록이 가능하고, 재생효율이 높은 자기헤드 및 그 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head and a method for manufacturing the same, and more particularly, to a magnetic head capable of high density recording and having high reproduction efficiency and a method for manufacturing the same.
일반적으로 자기헤드는 자기기록매체에 정보를 기록하거나 반대로 기록된 정보를 재생하는데 사용된다.In general, the magnetic head is used to record information on the magnetic recording medium or vice versa to reproduce the recorded information.
최근 자기기록방식이 아날로그방식에서 이보다 2 내지 4배정도 많은양의 정보를 기록 및 재생할 수 있는 디지털 방식으로 감에따라 고밀도 기록이 요구되고 있으며, 이에 부응하기 위해서는 자기헤드의 트랙폭이 좁아져야 한다.Recently, as the magnetic recording method is a digital method capable of recording and reproducing 2 to 4 times more information than the analog method, high density recording is required, and in order to meet this, the track width of the magnetic head needs to be narrowed.
종래의 자기헤드는 제1도에 도시되어 있는 바와같이, 한쌍의 코어반체(1)(2)가 자성막(3)과 절연막(4)이 순차적으로 적층형성되어 트랙(W)을 구성하는 다층자성층(5)과, 이 다층자성층(5)의 양측에 각각 접착되어 이를 지지하는 한쌍의 비자성기판(6)(6')으로 이루어져 있다. 그리고 이들 한쌍의 코어반체(1)(2)가 맞대어져 그 사이에 코일권선구멍(7)이 형성되고, 이들은 접착제에 의해 접착되어 환상의 자로(자기회로)를 구성하는 한편, 이러한 자로를 가로지르는 방향으로 자기갭(18)이 형성되어 있다.In the conventional magnetic head, as shown in FIG. 1, a pair of core bodies (1) and (2) have a multilayered structure in which a magnetic film 3 and an insulating film 4 are sequentially stacked to form a track W. As shown in FIG. It consists of a magnetic layer 5 and a pair of non-magnetic substrates 6 and 6 'bonded to and supported on both sides of the multilayer magnetic layer 5, respectively. Then, the pair of core half bodies 1, 2 are joined together to form coil winding holes 7 therebetween, which are bonded by an adhesive to form an annular magnetic path (magnetic circuit), while crossing the magnetic path. The magnetic gap 18 is formed in the direction of squeezing.
그러나 이와같이 구성된 종래의 자기헤드는, 고밀도 기록을 위해서는 트랙(W)을 구성하는 다층자성층(5)의 폭을 좁혀야 하는데, 다층자성층(5)의 폭이 10㎛이하가 되면 자기기록매체에서 누설되는 자속을 받아들이는 다층자성층(5)중의 자성막(3)의 면적이 그만큼 줄어들기 때문에 즉, 자로를 구성하는 부위가 좁아지기 때문에 재생출력이 떨어지게 되는 문제점이 있었다.However, the conventional magnetic head configured as described above has to narrow the width of the multilayer magnetic layer 5 constituting the track W for high density recording. When the width of the multilayer magnetic layer 5 is 10 μm or less, leakage occurs in the magnetic recording medium. Since the area of the magnetic film 3 in the multi-layered magnetic layer 5 that receives the magnetic flux to be reduced is reduced by that much, that is, the portion constituting the magnetic path is narrowed, so that there is a problem that the regeneration output falls.
본 발명은 상술한 바와같은 문제점을 감안하여 창출된 것으로서, 트랙의 폭을 줄여도 자로를 구성하는 부위가 좁아지지 않도록 한 자기헤드를 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to provide a magnetic head in which a portion constituting a gyro is not narrowed even if the width of the track is reduced.
또한 본 발명은 상기한 자기헤드를 제조하는 방법을 제공함에 다른 목적이 있다.It is another object of the present invention to provide a method of manufacturing the above magnetic head.
상기의 목적을 달성하기 위하여 본 발명은, 한쌍의 비자성기판과, 이 한쌍의 비자성기판의 사이에 형성되며 자성막과 절연막이 순차적으로 적층된 다층자성층으로 각각 이루어지고, 이들의 접착면 상측에 자기갭이 형성된 한쌍의 코어반체를 구비하여 된 자기헤드에 있어서,In order to achieve the above object, the present invention is composed of a pair of nonmagnetic substrates and a multilayer magnetic layer formed between the pair of nonmagnetic substrates and a magnetic film and an insulating film are sequentially stacked on the upper side of the adhesive surface thereof. In a magnetic head provided with a pair of core halves having a magnetic gap formed therein,
상기 한쌍의 비자성기판중 적어도 일측 비자성기판의 내측면 양측에, 상기 자기갭 부위의 다층자성층의 폭보다 다른 부위의 다층자성층의 폭이 상대적으로 넓게 형성되도록 하는 인입부가 각각 형성된 점에 그 특징이 있다.At least one inlet portion is formed at both sides of an inner surface of at least one nonmagnetic substrate of the pair of nonmagnetic substrates so that the width of the multilayer magnetic layer in a portion other than that of the magnetic gap portion is relatively wider. There is this.
본 발명의 다른 특징은, 비자성기판의 상면에 소정간격으로 인입홈을 복수개 형성하고, 상기 인입홈에 자성막과 절연막을 순차적으로 복수층 적층형성 한 다음, 상기 비자성기판의 전면을 덮도록 자성막과 절연막을 순차적으로 복수층 적층 형성하고, 그 위에 접착용 유리를 적층하는 공정과; 상기 공정에 의해 제조된 기판을 복수개 적층하고 융착하여 코어블록을 형성하고, 이 코어블록을 소정패턴으로 절단하여 복수개의 코어반체블록을 형성하는 공정과; 상기 코어반체블록을 한쌍씩 나누고 한쌍씩 나누어진 코어반체블록중 일측 코어반체블록에 각각 코일권선홈과 자기갭을 형성하는 공정과; 상기 한쌍씩 나누어진 코어반체블록을 접착제로 접착시킨 다음 소정패턴으로 절단하여 한쌍의 코어반체를 형성하는 공정 ; 을 포함하여 된 자기헤드의 제조방법을 제공하는데 있다.According to another aspect of the present invention, a plurality of inlet grooves are formed on the upper surface of the nonmagnetic substrate at predetermined intervals, and a plurality of layers of magnetic films and insulating films are sequentially formed on the inlet grooves to cover the entire surface of the nonmagnetic substrate. Forming a plurality of layers of a magnetic film and an insulating film sequentially, and laminating adhesion glass thereon; Stacking and fusing a plurality of substrates produced by the above process to form a core block, and cutting the core block into a predetermined pattern to form a plurality of core half blocks; Dividing the core half blocks one by one and forming a coil winding groove and a magnetic gap in one core half block among the pair of core half blocks; Bonding the core half blocks divided by one with an adhesive and then cutting them into a predetermined pattern to form a pair of core half bodies; It is to provide a method of manufacturing a magnetic head comprising a.
이하 첨부된 도면을 참조하여 본 발명에 따른 바람직한 실시예를 상세하게 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 따른 자기헤드는 제2도에 도시되어 있는 바와같이, 한쌍의 코어반체(11)(12)가 자성막(13)과 절연막(14)이 순차적으로 적층되어 트랙을 구성하는 다층자성층(15)과, 이 다층자성층(15)의 양측에 각각 접착되어 이를 지지하는 한쌍의 비자성기판(16)(16')으로 이루어 진다. 그리고 이들 한쌍의 코어반체(11)(12)중 일측 코어반체(12)에는 코일권선홈(17)과 자기갭(18)이 형성되고, 이들은 접착제에 의해 접착되어 환상의 자로(자기회로)를 구성한다. 그리고 본 발명의 특징에 따라 상기 한쌍의 비자성기판(16)(16')중 일측 비자성기판(16)의 내측면 양측에 그 가장자리로부터 중심 쪽으로 소정깊이 및 길이로 인입형성된 인입부(16a)가 각각 형성되어, 자기갭(18) 부위의 다층자성층(15)의 폭보다 다른 부위의 다층자성층(15)의 폭이 상대적으로 넓게 형성된다. 즉, 트랙(W)을 구성하는 다층자성층(15)의 폭보다 자로를 구성하는 다층자성층(15)의 폭이 상대적으로 넓게 형성된다.In the magnetic head according to the present invention, as shown in FIG. 2, the magnetic layer 13 and the insulating layer 14 are sequentially stacked on the pair of core bodies 11 and 12 to form a multi-layer magnetic layer ( 15) and a pair of non-magnetic substrates 16 and 16 'bonded to and supported on both sides of the multilayer magnetic layer 15, respectively. Coil winding grooves 17 and magnetic gaps 18 are formed in one core half body 12 of the pair of core half bodies 11 and 12, and they are bonded by an adhesive to form an annular magnetic path (magnetic circuit). Configure. An inlet 16a formed at a predetermined depth and length from the edge to the center on both inner sides of one side of the nonmagnetic substrate 16 of the pair of nonmagnetic substrates 16 and 16 'according to the characteristics of the present invention. Are respectively formed so that the width of the multi-layered magnetic layer 15 in a portion different from that of the multi-layered magnetic layer 15 in the magnetic gap 18 is formed relatively wide. That is, the width of the multi-layered magnetic layer 15 constituting the magnetic path is formed relatively wider than the width of the multi-layered magnetic layer 15 constituting the track (W).
이와같이 구성된 본 발명에 따른 자기헤드는, 일측 비자성기판(16)의 내측면 양측에 각각 인입부(16a)가 형성되어 트랙(W)을 구성하는 자기갭(18) 부위의 다층자성층(15)의 폭보다 자로를 구성하는 다른 부위의 다층자성층(15)의 폭이 상대적으로 넓게 형성되어 있으므로, 고밀도 기록을 위해 트랙(W)의 폭을 10㎛이하로 좁혀도 자기기록매체로부터 누설되는 자속을 받아들이는 자로부위가 재생출력에 영향을 미칠정도로 줄어들기 않게 된다. 따라서 종래와 같이 고밀도 기록을 위하여 트랙폭을 줄이는 경우 자로부위가 줄어들어 발생되는 재생출력의 떨어짐이 방지되게 된다.In the magnetic head according to the present invention configured as described above, the magnetic inlet portions 16a are formed on both sides of the inner surface of the nonmagnetic substrate 16 so that the multilayer magnetic layer 15 of the magnetic gap 18 forming the track W is formed. Since the multi-layered magnetic layer 15 of the other portion constituting the magnetic path is formed to be relatively wider than the width, the magnetic flux leaking from the magnetic recording medium is reduced even if the width of the track W is reduced to 10 占 퐉 or less for high density recording. The receiving path is not reduced enough to affect the playback output. Therefore, when the track width is reduced for high density recording as in the prior art, the fall of the reproduction output caused by the reduction of the magnetic domain is prevented.
이와같이 구성된 자기헤드의 제조방법을 제3도를 참조하여 상세하게 설명하면 다음과 같다.The manufacturing method of the magnetic head configured as described above will be described in detail with reference to FIG.
먼저 제3도(a)에 도시된 바와같이 비자성기판(16)의 상면에 소정간격으로 인입홈(15a)를 복수개 형성하고, 그 위에 제3도(b)에 도시된 바와같이 스퍼터링법이나 증착법으로 자성막(13)과 절연막(14)을 순차적으로 복수층 적층 형성 한 다음, 제3도(c)에 도시된 바와같이 상기 인입홈(16a)에 인입된 자성막(13)과 절연막(14)만을 남기고 다른 부위는 래핑하여 제거한다. 여기에서 상기 자성막(13)은, 철계 화합물이나 비정질 Co계 화합물등과 같이 투자율과 포화 자속밀도가 크고 보자력이 작은 물질이 사용되고, 자성막(13)의 두께는 1㎛에서 10㎛정도이고, 상기 절연막(14)은, SiO2또는 Al2O3을 사용하며 두께는 0.1㎛정도로 형성된다.First, as shown in FIG. 3 (a), a plurality of inlet grooves 15a are formed on the upper surface of the nonmagnetic substrate 16 at predetermined intervals, and as shown in FIG. After depositing a plurality of layers of the magnetic film 13 and the insulating film 14 by the vapor deposition method, the magnetic film 13 and the insulating film introduced into the recess 16a as shown in FIG. 14) Wrap only and remove other parts leaving only. Here, the magnetic film 13 is made of a material having a high magnetic permeability, a high saturation magnetic flux density and a small coercive force, such as an iron compound or an amorphous Co compound, and the magnetic film 13 has a thickness of about 1 μm to about 10 μm, The insulating film 14 is made of SiO 2 or Al 2 O 3 and has a thickness of about 0.1 μm.
그리고 상기 비자성기판(16)의 상면을 덮도록 제3도(d)에 도시된 바와같이 스퍼터링법이나 증착법으로 자성막(13)과 절연막(14)을 순차적으로 복수층 적층 형성한다. 그리고 상기와 같이 제조된 기판을 복수개 적층하고 접착용 유리로 융착하여 제3도(e)에 도시된 바와같은 코어블록(19)을 형성하고, 이 코어블록(19)을 소정패턴으로 절단하여 복수개의 코어반체블록(19a)(19b)을 형성한다. 그리고 상기 코어반체블록(19a)(19b)을 한쌍씩 나누고 한쌍씩 나누어진 코어반체블록(19a)(19b)중 일측 코어반체블록(19b)에 각각 제3도(f)에 도시된 바와같이 코일권선홈(17)(17')과 자기갭(18)을 형성한다. 그리고 상기 한쌍씩 나누어진 코어반체블록(19a)(19b)을 접착제로 접착시킨 다음 절단선 A-A에 따라 소정의 폭으로 절단하여 제3도(g)에 도시된 바와같은 한쌍의 코어반체(11)(12)를 제조한다. 그리고 코일권선홈(17)(17')에 도시되지 않은 코일을 감아 자기헤드를 제조하게 된다.Then, as shown in FIG. 3 (d), the magnetic film 13 and the insulating film 14 are sequentially stacked in a plurality of layers so as to cover the upper surface of the nonmagnetic substrate 16. Then, a plurality of substrates prepared as described above are laminated and fused with adhesive glass to form a core block 19 as shown in FIG. 3 (e), and the core block 19 is cut in a predetermined pattern to obtain a plurality of substrates. Core half blocks 19a and 19b are formed. The core half block 19a, 19b is divided into pairs, and one of the core half block 19a, 19b divided into pairs is disposed in one core half block 19b, as shown in FIG. 3 (f). Winding grooves 17 and 17 'and a magnetic gap 18 are formed. Then, the pair of core half blocks 19a and 19b divided by adhesive are bonded to each other, and then cut into a predetermined width according to the cutting line AA, so that the pair of core half bodies 11 as shown in FIG. (12) is manufactured. A coil (not shown) is wound around the coil winding grooves 17 and 17 'to manufacture a magnetic head.
이상에서 설명한 바와같이 본 발명 자기헤드 및 그 제조방법은, 한쌍의 비자성기판중 적어도 일측 비자성기판의 내측면 양측에 인입홈이 형성되어, 이 인입홈에 의해 자기갭 부위의 트랙을 구성하는 다층자성층의 폭보다 자로를 구성하는 다른 부위의 다층자성층의 폭이 상대적으로 넓게 형성되어 있으므로, 고밀도 기록을 위해 트랙폭을 10㎛이하로 좁혀도 자기기록매체로부터 누설되는 자속을 받아들이는 자로부위가 재생출력에 영향을 미칠정도로 줄어들지 않게 된다. 따라서 고밀도 기록이 가능하고, 재생효율이 우수한 자기헤드를 얻을 수 있게 된다.As described above, in the magnetic head of the present invention and a method of manufacturing the same, inlet grooves are formed on both inner sides of at least one nonmagnetic substrate of the pair of nonmagnetic substrates, and the inlet grooves form a track of the magnetic gap region. Since the width of the multi-layered magnetic layer in other parts constituting the magnetic path is relatively wider than the width of the multi-layered magnetic layer, the magnetic field portion that receives the magnetic flux leaking from the magnetic recording medium even if the track width is reduced to 10 占 퐉 or less for high density recording. It will not be reduced enough to affect the playback output. Therefore, high density recording is possible and a magnetic head excellent in reproduction efficiency can be obtained.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920018177A KR100200805B1 (en) | 1992-10-05 | 1992-10-05 | Magnetic head and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920018177A KR100200805B1 (en) | 1992-10-05 | 1992-10-05 | Magnetic head and method of manufacturing the same |
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| Publication Number | Publication Date |
|---|---|
| KR940009941A KR940009941A (en) | 1994-05-24 |
| KR100200805B1 true KR100200805B1 (en) | 1999-06-15 |
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| KR1019920018177A Expired - Fee Related KR100200805B1 (en) | 1992-10-05 | 1992-10-05 | Magnetic head and method of manufacturing the same |
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| KR (1) | KR100200805B1 (en) |
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| KR940009941A (en) | 1994-05-24 |
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