JPH01237920A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPH01237920A JPH01237920A JP6353188A JP6353188A JPH01237920A JP H01237920 A JPH01237920 A JP H01237920A JP 6353188 A JP6353188 A JP 6353188A JP 6353188 A JP6353188 A JP 6353188A JP H01237920 A JPH01237920 A JP H01237920A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- head
- recording
- coil
- width
- 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
- 230000005284 excitation Effects 0.000 claims description 10
- 239000000696 magnetic material Substances 0.000 claims description 7
- 230000004907 flux Effects 0.000 abstract description 9
- 239000000758 substrate Substances 0.000 abstract description 3
- 230000005347 demagnetization Effects 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- 230000035699 permeability Effects 0.000 description 3
- 102000010970 Connexin Human genes 0.000 description 2
- 108050001175 Connexin Proteins 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003976 gap junction Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron-aluminum-silicon Chemical compound 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は磁気ヘッドに係り、特に消去ヘッドと記録再生
ヘッドとを一体的に形成してなる磁気ヘッドであって、
消去ヘッドから記録再生用ヘッドへのクロストークを大
幅に低減するＥｆｔ気ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head, and more particularly to a magnetic head that integrally forms an erasing head and a recording/reproducing head,
The present invention relates to an EFT head that significantly reduces crosstalk from an erasing head to a recording/reproducing head.
磁気記録の高密度化に伴い、磁気記録媒体の保磁力が高
められ、この磁気記録媒体に記録可能な磁気ヘッドとし
て、少なくとも磁気ギャップと対向する部分を高飽和磁
束密度を有する磁性材料で構成した磁気ヘッドが提案さ
れている。With the increase in the density of magnetic recording, the coercive force of magnetic recording media has been increased, and magnetic heads that can record on these magnetic recording media are made of a magnetic material with a high saturation magnetic flux density, at least in the portion facing the magnetic gap. A magnetic head has been proposed.
第２図及び第３図は出願人が先に提案している磁気ヘッ
ドの構成を示し、２１は記録再生ヘッド、２２は消去ヘ
ッド、２４．３６は第１コア半休、２５及び３７は第２
コア半体、２９．３２．４２．４５は磁気ギャップを介
して各々対向位置するように形成した突出部、３０．４
３は第１コア基体、３１．４４は第１磁性薄膜、３３．
４６は第２コア基体、３４．４７は第２磁性薄膜、３５
．４１は磁性ギャップである。図示の構成とすることに
よって磁束がギャップ接合面で飽和するまでギャップ接
合面以外の磁路で飽和することがなくなり、ヘッド出力
を向上させることが可能となった。2 and 3 show the configuration of a magnetic head previously proposed by the applicant, in which 21 is a recording/reproducing head, 22 is an erasing head, 24.36 is a first core half-closed, and 25 and 37 are second cores.
Core halves, 29.32.42.45 are protrusions formed to face each other through a magnetic gap, 30.4
3 is a first core substrate, 31.44 is a first magnetic thin film, 33.
46 is the second core substrate, 34.47 is the second magnetic thin film, 35
．． 41 is a magnetic gap. By adopting the configuration shown in the figure, the magnetic flux is prevented from being saturated in the magnetic path other than the gap junction surface until it is saturated at the gap junction surface, making it possible to improve the head output.
以上の如く、第２図及び第３図に示す提案はヘッド出力
を向上させる点では大きな効果を有するが、クロストー
ク防止を直接的な目的とするものではないため、この点
については従来構成に比較して大幅な性能向上は達成さ
れていない。As mentioned above, the proposals shown in Figures 2 and 3 have a great effect in improving the head output, but since they are not aimed directly at preventing crosstalk, the conventional configurations cannot be improved in this respect. No significant performance improvement has been achieved in comparison.
今後より一層の記録の高密度化が要求されるであろうこ
とは明白であり、このためにギャップ間隔の縮小や、媒
体保磁力の増大（従って消去すべき磁界も増大する）が
更に要求されることになる。It is clear that even higher recording densities will be required in the future, and this will require further reductions in gap spacing and increases in medium coercive force (therefore, the magnetic field to be erased will also increase). That will happen.
このためクロストーク防止対策はより切実な問題となる
ものと考えられる。For this reason, measures to prevent crosstalk are considered to be a more pressing issue.
本発明は上述した課題を解決すべく構成したものであっ
て、出願人が先に提案しているヘッドの改良に係る。即
ち消去ヘッドと記録再生用ヘッドとを接続することによ
り構成した磁気ヘッド装置で、媒体摺動方向に於ける消
去ヘッドのコイル形成幅を、同方向に於ける記録再生ヘ
ッドのコイル形成幅よりも大きく形成した磁気ヘッドで
ある。The present invention is constructed to solve the above-mentioned problems, and relates to an improvement of a head previously proposed by the applicant. In other words, in a magnetic head device configured by connecting an erasing head and a recording/reproducing head, the coil forming width of the erasing head in the medium sliding direction is larger than the coil forming width of the recording/reproducing head in the same direction. This is a large magnetic head.
〔作用〕
媒体摺動方向に於けるコイル形成幅を記録再生ヘッドの
コイルよりも消去ヘッドのコイルにおいて大きく形成す
るとにより、消去ヘッド側から記録再生ヘッド側へのク
ロストークを大幅に減少する。[Operation] By making the coil width in the medium sliding direction larger in the erasing head coil than in the recording/reproducing head coil, crosstalk from the erasing head side to the recording/reproducing head side can be significantly reduced.
以下本発明の実施例を図面を参考に詳細に説明する。 Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の実施例を示す磁気ヘッドの平面図、第
４図は第１図のイーイ線による断面図である。FIG. 1 is a plan view of a magnetic head showing an embodiment of the present invention, and FIG. 4 is a sectional view taken along line E-II in FIG.
図示の磁気ヘッドは磁気ディスク記録再生装置に用いる
ものであり、記録再生ヘッド２１と、消去ヘッド２２と
、再磁気ヘッド間の磁気的な影響を阻止するための非磁
性体２３とから主として構成しである。磁気記録媒体（
磁気ディスク）の走行方向の上流側に消去ヘッド２２が
位置するように、図示のこれら一体物がヘッド保持体（
図示せず）に取り付けられる。The illustrated magnetic head is used in a magnetic disk recording/reproducing device, and mainly consists of a recording/reproducing head 21, an erasing head 22, and a nonmagnetic material 23 for preventing magnetic influence between the remagnetic heads. It is. Magnetic recording media (
These integral parts shown in the figure are attached to a head holder (
(not shown).
記録再生ヘッド２１は第１コア半体２４と、これに対向
位置する第２コア半体２５と、第１コア半体２４に形成
したコイル溝２６に巻装した励磁コイル２７とから構成
しである。２８はラス等の非磁性体からなる補強層であ
り、第１コア半休２４と第２コア半体２５の接合部近傍
に設けである。The recording/reproducing head 21 is composed of a first core half 24, a second core half 25 located opposite thereto, and an excitation coil 27 wound around a coil groove 26 formed in the first core half 24. be. A reinforcing layer 28 is made of a non-magnetic material such as lath, and is provided near the joint between the first core half 24 and the second core half 25.
第１コア半体２４は、磁気ギャップ３５と対向する側面
のほぼ中央に山形の突出部２９を有する第１コア基体３
０と、その側面に形成した第ｔ Ｌｆｆ性薄膜３１とか
ら構成しである。The first core half 24 has a first core base 3 having a chevron-shaped protrusion 29 approximately at the center of the side surface facing the magnetic gap 35.
0 and a t Lff thin film 31 formed on the side surface thereof.
前記第１コア基体３０の構成材料としては例えばマンガ
ン−亜鉛フェライトやニッケルー亜鉛フェライトのよう
な高透磁率を有するフェライトが用いられる。一方前記
第１ Ｋｉ性薄膜３１には、高飽和磁束密度ならびに高
透磁率を存する結晶質合金や非晶質合金が用いられる。As the constituent material of the first core base 30, for example, a ferrite having high magnetic permeability such as manganese-zinc ferrite or nickel-zinc ferrite is used. On the other hand, for the first Ki thin film 31, a crystalline alloy or an amorphous alloy having high saturation magnetic flux density and high magnetic permeability is used.
このうち結晶質合金としては鉄−アルミニウム−ケイ素
合金、鉄−ゲイ素系合金等がある。また非晶質合金とし
ては、鉄、ニッケル、コバルトのグループから選択され
た１種以上の元素から成る合金、またはこれを主成分と
して、アルミニウム、ゲルマニウム、ベリリウム、スズ
、モリブデン、インジュウム、タングステン、チタン、
マンガン、クロム、ジルコニウム、ハフニウム、ニオブ
等の元素を添加した合金、或いはコバルト、ジルコニウ
ムを主成分として前記添加元素を含んだ合金等がある。Among these, crystalline alloys include iron-aluminum-silicon alloys, iron-gay alloys, and the like. Examples of amorphous alloys include alloys consisting of one or more elements selected from the group of iron, nickel, and cobalt, or alloys containing these as main components, such as aluminum, germanium, beryllium, tin, molybdenum, indium, tungsten, and titanium. ,
There are alloys to which elements such as manganese, chromium, zirconium, hafnium, and niobium are added, and alloys containing cobalt and zirconium as main components and the above-mentioned additional elements.
第２コア半体２５も第１コア半体２４と同様に、磁気ギ
ャップ３５と対向する側面のほぼ中央に山形の突出部３
２を有する高透磁性のフェライトから成る第２コア基体
３３と、それの前記側面に形成した高飽和磁束密度と高
透磁率を有する金属磁性材料から成る第２磁性薄膜３４
とから構成されている。第１図に示すように第１コア半
体２４側の突出部２９ならびに第１磁性薄膜３１と、第
２コア半体２５側の突出部３２ならびに第２ ｉｆｆ性
薄膜３４とは、接合部近傍の形状が磁気ギャップ３５を
介してほぼ左右対称となっている。Similarly to the first core half 24, the second core half 25 also has a chevron-shaped protrusion 3 approximately in the center of the side surface facing the magnetic gap 35.
2, and a second magnetic thin film 34 made of a metal magnetic material having high saturation magnetic flux density and high magnetic permeability formed on the side surface thereof.
It is composed of. As shown in FIG. 1, the protrusion 29 and the first magnetic thin film 31 on the first core half 24 side, and the protrusion 32 and the second IF thin film 34 on the second core half 25 side are located near the joint. The shapes of the two are substantially symmetrical with respect to each other with the magnetic gap 35 interposed therebetween.
一方、消去ヘッド２２は第２コア半体３７と、この第２
コア半体３７に設けたコイル溝３８に巻装される励磁コ
イル３９とから構成されている。On the other hand, the erasing head 22 is connected to the second core half 37 and the second core half 37 .
The excitation coil 39 is wound around a coil groove 38 provided in a core half 37.
４０はガラス等の非磁性材料からなる補強層であり、第
１コア基体４３と第２コア半体３７の接合部近傍に設け
られている。A reinforcing layer 40 is made of a non-magnetic material such as glass, and is provided near the joint between the first core base 43 and the second core half 37.
第２コア半体３７は磁気ギャップ４１と対向する側面を
所定の間隔をおいて２つの山形の突出部４５を有する高
ｉ３ Ｇｌ’ｌ率のフェライトからなる第２コア基体４
６と、それの前記側面に形成した高飽和磁束密度と高１
率を有する金属磁性材から成る第２磁性薄膜４７とから
構成しである。The second core half 37 has a second core base 4 made of ferrite with a high i3 Gl'l ratio and has two chevron-shaped protrusions 45 at a predetermined interval on the side facing the magnetic gap 41.
6, and a high saturation magnetic flux density and a high 1 formed on the side surface thereof.
and a second magnetic thin film 47 made of a metal magnetic material having a magnetic flux.
以上の構成において、記録再生へ・７ド２１側に巻装し
た励磁コイル２７の媒体摺動方向における形成幅Ｗ１に
対して、消去ヘッド２２側に巻装した励磁コイル３９の
形成幅Ｗ２の方が大きくなるように構成する（第４図参
照）。In the above configuration, the forming width W2 of the exciting coil 39 wound on the erasing head 22 side is smaller than the forming width W1 of the exciting coil 27 wound on the recording/reproducing head 21 side in the medium sliding direction. (See Figure 4).
第５図は消去ヘッド側励磁コイル形成幅と記録再生ヘッ
ド側励磁コイル形成幅との比率Ｗ２／Ｗ１と磁気ヘッド
のクロストークの発生率との関係を示す。同図からも明
らかなとおり、前記比率が１以上、即ち消去ヘッド倒動
もイ１コイルの形成幅を記録再生ヘッド側励磁コイルの
形成幅よりも大きく設定するとクロストーク発生率をか
なり低く押さえるが可能となる。FIG. 5 shows the relationship between the ratio W2/W1 of the width of the excitation coil on the erasing head side and the width of the excitation coil on the recording/reproducing head side and the incidence of crosstalk in the magnetic head. As is clear from the figure, if the ratio is 1 or more, that is, if the width of the erase head tilting coil is set to be larger than the width of the excitation coil on the recording/reproducing head side, the crosstalk occurrence rate can be kept quite low. It becomes possible.
以上の如く、媒体摺動方向に於けるコイル形成幅を、記
録再生ヘッドのコイルよりも消去ヘッドのコイルにおい
て大きく形成するとにより、磁束密度を高めることなく
高い消磁力を発揮する。即ち消磁力を低減することなく
磁束密度を低減できるので消去ヘッド側から記録再生ヘ
ッド側へのクロストークを大幅に減少させることができ
る。As described above, by forming the coil width in the medium sliding direction in the erasing head coil to be larger than that in the recording/reproducing head coil, a high demagnetizing force can be exerted without increasing the magnetic flux density. That is, since the magnetic flux density can be reduced without reducing the demagnetizing force, crosstalk from the erasing head side to the recording/reproducing head side can be significantly reduced.
第１図は本発明の実施例を示す磁気ヘッドの平面図、第
２図は先に提案した磁気ヘッドの平面図、第３図は第２
図のローロ線による断面図、第４図は第１図のイーイ線
による断面図、第５図は消去ヘッド及び記録再生ヘッド
の励磁コイル形成幅の比率とクロストーク発生率との関
係を示す線図である。
２１・・・記録再生ヘッド ２２・・・消去ヘッド
２３・・・非磁性体
２５・・・第２コア半休
３０・・・第１コア基体
２７・・・記録再生ヘッド側励磁コイル３９・・・消去
ヘッド側励磁コイル
Ｗ１・・・記録再生ヘッド側励磁コイルの形成幅Ｗ２・
・・消去ヘッド側励磁コイルの形成幅第１図
第４図
第５図
Ｗ２ ／ Ｗ。FIG. 1 is a plan view of a magnetic head showing an embodiment of the present invention, FIG. 2 is a plan view of a previously proposed magnetic head, and FIG.
4 is a cross-sectional view taken along the E-I line in FIG. It is a diagram. 21... Recording/reproducing head 22... Erasing head
23...Non-magnetic material 25...Second core half-off 30...First core base 27...Recording/reproducing head side excitation coil 39...Erasing head side Exciting coil W1...Recording/reproducing head side Excitation coil formation width W2・
... Formation width of the excitation coil on the erasing head side Fig. 1 Fig. 4 Fig. 5 W2/W.
Claims (1)
ッドと記録再生ヘッドとを一体的に形成してなる磁気ヘ
ッドにおいて、消去ヘッド側に巻装した励磁コイルの形
成幅を、記録再生ヘッド側に巻装した励磁コイルの形成
幅よりも大きく形成したことを特徴とする磁気ヘッド。In a magnetic head in which an erasing head and a recording/reproducing head are integrally formed via a non-magnetic material with respect to the sliding direction of the magnetic recording medium, the width of the excitation coil wound around the erasing head side is defined as the recording/reproducing head. A magnetic head characterized in that the width is larger than the width of an excitation coil wound around the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6353188A JPH01237920A (en) | 1988-03-18 | 1988-03-18 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6353188A JPH01237920A (en) | 1988-03-18 | 1988-03-18 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01237920A true JPH01237920A (en) | 1989-09-22 |
Family
ID=13231895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6353188A Pending JPH01237920A (en) | 1988-03-18 | 1988-03-18 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01237920A (en) |
-
1988
- 1988-03-18 JP JP6353188A patent/JPH01237920A/en active Pending
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