JPH0235623A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPH0235623A JPH0235623A JP63184941A JP18494188A JPH0235623A JP H0235623 A JPH0235623 A JP H0235623A JP 63184941 A JP63184941 A JP 63184941A JP 18494188 A JP18494188 A JP 18494188A JP H0235623 A JPH0235623 A JP H0235623A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic particles
- head
- recording medium
- axis
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 49
- 239000006249 magnetic particle Substances 0.000 claims abstract description 34
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000005415 magnetization Effects 0.000 abstract description 19
- 230000004907 flux Effects 0.000 abstract description 14
- 230000005347 demagnetization Effects 0.000 abstract description 7
- 238000013459 approach Methods 0.000 abstract description 4
- 230000002250 progressing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は磁気記録媒体、特に板状磁性粒子を塗布して作
られた磁気記録媒体に間するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to magnetic recording media, particularly magnetic recording media made by coating plate-shaped magnetic particles.
従来の技術
近年、磁気記録媒体の研究対象は、既に実用化されてい
る長手記録用媒体から、垂直記録媒体へと移行しつつあ
る。BACKGROUND OF THE INVENTION In recent years, the focus of research on magnetic recording media has been shifting from longitudinal recording media, which have already been put into practical use, to perpendicular recording media.
以下図面を参照しながら上述した垂直記録媒体の一例に
ついて説明する。An example of the above-mentioned perpendicular recording medium will be described below with reference to the drawings.
第３図は、上述した垂直記録用磁気記録媒体の一部切欠
斜視図である。第３図において、１はＢａ０・５Ｆｅｚ
Ｏｉのような板状磁性粒子で、プラスティックフィルム
などのベース２の上にバインダー３を用いて塗布する。FIG. 3 is a partially cutaway perspective view of the above-mentioned perpendicular recording magnetic recording medium. In Figure 3, 1 is Ba0.5Fez
Plate-shaped magnetic particles such as Oi are applied onto a base 2 such as a plastic film using a binder 3.
板状磁性粒子１は、面に対して垂直な方向に磁化されや
すく、塗布直後に磁界をかけることにより一定の方向に
配向されている。配向の方向は、磁化されやすい面方向
を記録媒体と磁気ヘッドの相対走行方向に対して垂直に
配向させる。配向により、磁気記録媒体の磁気特性、電
磁変換特性が変化する。The plate-shaped magnetic particles 1 are easily magnetized in a direction perpendicular to the surface, and are oriented in a certain direction by applying a magnetic field immediately after coating. The orientation direction is such that the surface direction that is easily magnetized is perpendicular to the relative running direction of the recording medium and the magnetic head. The magnetic properties and electromagnetic conversion properties of the magnetic recording medium change depending on the orientation.
以上のように構成された磁気記録媒体について、以下そ
の動作について第４図を用いて説明する。The operation of the magnetic recording medium configured as described above will be explained below with reference to FIG. 4.
まず、ある１つの板状磁性粒子４に着目する。First, attention is paid to a certain plate-shaped magnetic particle 4.
リング型磁気へラド５が板に対して垂直方向に磁化容易
軸を持つ板状磁性粒子４の上を通過するに従って、ヘッ
ド磁界６の垂直成分７が板状磁性粒子４をヘッド走行方
向日に対して垂直に磁化し、リング型磁気へラド５が通
り過ぎた後にも板状磁性粒子４は垂直方向に残留磁化を
持つ。こうして垂直磁気記録がなされる。As the ring-shaped magnetic helad 5 passes over the plate-shaped magnetic particles 4 whose axis of easy magnetization is perpendicular to the plate, the perpendicular component 7 of the head magnetic field 6 moves the plate-shaped magnetic particles 4 in the direction of head travel. The plate-shaped magnetic particles 4 are magnetized perpendicularly to the magnetic field, and have residual magnetization in the perpendicular direction even after the ring-shaped magnetic field 5 has passed. In this way, perpendicular magnetic recording is performed.
（例えば、電気化学および工業物理化学１９８６、磁１
Ｏ１Ｐ８３２〜Ｐ８３６）
発明が解決しようとする課題
しかしながら、上記のような構成では、リングヘッドを
用いた場合、板状磁性粒子の磁気容易軸がヘッドの相対
走行方向に対して垂直方向であるので、ヘッドが磁性粒
子から遠ざかる時、記録時とは、逆向きの磁束が磁性粒
子にかかるために、残留磁化が残りにくい（記録減磁）
という問題点を有していた。(For example, Electrochemistry and Industrial Physical Chemistry 1986, Magnetics 1
O1P832-P836) Problems to be Solved by the Invention However, in the above configuration, when a ring head is used, the magnetic easy axis of the plate-shaped magnetic particles is perpendicular to the relative running direction of the head. When the head moves away from the magnetic particles, magnetic flux in the opposite direction to that during recording is applied to the magnetic particles, so residual magnetization is less likely to remain (recording demagnetization)
There was a problem.
本発明は、上記問題点に鑑み、リングヘッドによる垂直
磁気記録時に、残留磁化が残りやすい磁気記録媒体を提
供するものである。In view of the above problems, the present invention provides a magnetic recording medium in which residual magnetization tends to remain during perpendicular magnetic recording using a ring head.
課題を解決するための手段
上記課題を解決するために本発明の磁気記録媒体は、板
状磁性粒子をヘッドの相対進行方向に対して斜めに配向
させるという構成を備えたものである。Means for Solving the Problems In order to solve the above problems, the magnetic recording medium of the present invention has a configuration in which plate-shaped magnetic particles are oriented obliquely to the relative traveling direction of the head.
作用
本発明は、上記した構成により、磁化容易軸が傾いてい
るため、記録減磁が起こ、りにくく残留磁化が残り易い
ということとなる。In the present invention, due to the above-described configuration, the axis of easy magnetization is tilted, so that recording demagnetization is less likely to occur and residual magnetization is likely to remain.
実施例
以下本発明の一実施例の磁気記録媒体について、図面を
参照しながら説明する。EXAMPLE A magnetic recording medium according to an example of the present invention will be described below with reference to the drawings.
第１図は、本発明の実施例における磁気記録媒体の一部
切欠斜視図を示すものである。FIG. 1 shows a partially cutaway perspective view of a magnetic recording medium in an embodiment of the present invention.
第１図において、９は斜めに配向された板状磁性粒子を
示す。第２図は、記録時の概念図を示す。In FIG. 1, numeral 9 indicates obliquely oriented plate-shaped magnetic particles. FIG. 2 shows a conceptual diagram at the time of recording.
１０は、斜めに配向された板状磁性粒子の断面、１１は
、リングヘッドが磁性粒子に近づいていく時の磁束の方
向、１２は、リングヘッドが磁性粒子から離れている時
の磁束の方向を示す。10 is the cross section of the obliquely oriented plate-shaped magnetic particle, 11 is the direction of magnetic flux when the ring head approaches the magnetic particle, and 12 is the direction of magnetic flux when the ring head is away from the magnetic particle. shows.
以上のように構成された磁気記録媒体について以下第２
図を用いてその動作を説明する。Regarding the magnetic recording medium configured as above, the following is the second section.
The operation will be explained using figures.
リングヘッド５が、ヘッドの相対走行方向８の向きに斜
め配向された板状磁性粒子を走向する。A ring head 5 runs plate-shaped magnetic particles that are obliquely oriented in a relative running direction 8 of the head.
この時、ある１つの斜め配向された磁性粒子１０に着目
すると、磁性粒子ＩＯに対して加わる磁束は、ベクトル
的に変化するが磁化容易軸が傾いているために、ヘッド
が磁性粒子に近づく時は、磁束と磁化容易軸のなす角は
小さいので磁性粒子は磁化されやすい。しかし、ヘッド
が磁性粒子から離れる時は、磁束の向きは、ヘッドが近
づく時の逆方向に近くなるので、磁性粒子は逆向きに磁
化され、いわゆる記録減磁が起こる。この時第２図のよ
うに磁化容易軸を傾けておくと磁束の方向と磁化容易軸
のなす角が大きくなるので、記録減磁が緩和される。At this time, focusing on a certain obliquely oriented magnetic particle 10, the magnetic flux applied to the magnetic particle IO changes vectorially, but since the axis of easy magnetization is tilted, when the head approaches the magnetic particle Since the angle between the magnetic flux and the axis of easy magnetization is small, the magnetic particles are easily magnetized. However, when the head moves away from the magnetic particles, the direction of the magnetic flux becomes close to the opposite direction when the head approaches, so the magnetic particles are magnetized in the opposite direction, resulting in so-called recording demagnetization. At this time, if the axis of easy magnetization is tilted as shown in FIG. 2, the angle between the direction of the magnetic flux and the axis of easy magnetization becomes larger, so that recording demagnetization is alleviated.
以上のように１本実施例によれば、板状磁性粒子を斜め
に配向することにより、記録減磁が緩和され、磁性粒子
に残留磁化が残りやすくなる。As described above, according to this embodiment, by orienting the plate-shaped magnetic particles obliquely, recording demagnetization is alleviated, and residual magnetization tends to remain in the magnetic particles.
発明の効果
以上のように本発明は、板に対して垂直方向に磁化容易
軸を有する磁性粒子をヘッドの相対走行方向に対して斜
めに配向することにより、記録減磁の少ない、高出力の
垂直磁気記録用磁記録媒体を得ることができる。Effects of the Invention As described above, the present invention achieves high output with less recording demagnetization by orienting magnetic particles having an axis of easy magnetization perpendicular to the plate obliquely to the relative running direction of the head. A magnetic recording medium for perpendicular magnetic recording can be obtained.
第１図は本発明の実施例における磁気記録媒体の一部切
欠斜視図、第２図は記録時の概念図、第３図は従来の磁
気記録媒体の一部切欠斜視図、第４図は従来の磁気記録
媒体の記録時の概念図である。
１・・・・・・斜め配向しない従来の板状磁気記録媒体
、２・・・・・・テープベース、３・・・・・・バイン
ダー、４・・・・・・斜め配向しない従来の磁気記録媒
体の断面、５・・・・・・リング型磁気ヘッド、６・・
・・・・ヘッド磁束、７・・・・・・ヘッド磁束の垂直
成分、８・・・・・・ヘッドの相対進行方向、９・・・
・・・斜め配向した板状磁性粒子、１０・・・・・・斜
め配向した板状磁性粒子の断面、１１・・・・・・記録
磁束、１２・・・・・・磁化を減磁させる磁束。
代理人の氏名 弁理士 粟野重孝 はか１名第
第
図
図
１／
第
図
第
図FIG. 1 is a partially cutaway perspective view of a magnetic recording medium according to an embodiment of the present invention, FIG. 2 is a conceptual diagram during recording, FIG. 3 is a partially cutaway perspective view of a conventional magnetic recording medium, and FIG. FIG. 2 is a conceptual diagram of a conventional magnetic recording medium during recording. 1... Conventional plate-shaped magnetic recording medium that is not oriented diagonally, 2... Tape base, 3... Binder, 4... Conventional magnetic material that is not oriented diagonally. Cross section of recording medium, 5...Ring type magnetic head, 6...
... Head magnetic flux, 7 ... Vertical component of head magnetic flux, 8 ... Relative traveling direction of the head, 9 ...
... Obliquely oriented plate-shaped magnetic particles, 10... Cross section of obliquely oriented plate-like magnetic particles, 11... Recording magnetic flux, 12... Demagnetizing magnetization. magnetic flux. Name of agent: Patent attorney Shigetaka Awano (1 person) Figure 1 / Figure Figure 1
Claims (1)
配向方向を磁性塗膜の表面に対して傾斜させてなること
を特徴とする磁気記録媒体。A magnetic recording medium characterized in that the orientation direction of plate-shaped magnetic particles having a magnetic easy axis perpendicular to the plate is inclined with respect to the surface of a magnetic coating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63184941A JPH0235623A (en) | 1988-07-25 | 1988-07-25 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63184941A JPH0235623A (en) | 1988-07-25 | 1988-07-25 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0235623A true JPH0235623A (en) | 1990-02-06 |
Family
ID=16162034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63184941A Pending JPH0235623A (en) | 1988-07-25 | 1988-07-25 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0235623A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62195725A (en) * | 1986-02-20 | 1987-08-28 | Hitachi Maxell Ltd | Magnetic recording medium |
-
1988
- 1988-07-25 JP JP63184941A patent/JPH0235623A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62195725A (en) * | 1986-02-20 | 1987-08-28 | Hitachi Maxell Ltd | Magnetic recording medium |
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