JPH02134708A - Erasure head - Google Patents
Erasure headInfo
- Publication number
- JPH02134708A JPH02134708A JP28973888A JP28973888A JPH02134708A JP H02134708 A JPH02134708 A JP H02134708A JP 28973888 A JP28973888 A JP 28973888A JP 28973888 A JP28973888 A JP 28973888A JP H02134708 A JPH02134708 A JP H02134708A
- Authority
- JP
- Japan
- Prior art keywords
- face
- pole
- magnetizing
- magnetized
- side faces
- 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.)
- Granted
Links
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 6
- 239000000696 magnetic material Substances 0.000 claims description 4
- 230000005415 magnetization Effects 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 22
- 239000000463 material Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- 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
- G11B5/325—Erasing heads using permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は磁気テープに記録された内容を消去するだめの
永久磁石消去ヘッドに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a permanent magnet erase head for erasing content recorded on a magnetic tape.
従来、テープへの接触面に複数磁極の着磁面と無着磁面
とをもち両方側面に着磁面をもたないものは、特開昭５
９−４２６０２号公報によって開示されている。Conventionally, a tape having a magnetized surface with multiple magnetic poles and a non-magnetized surface on the contact surface to the tape, but not having a magnetized surface on both sides, was disclosed in Japanese Patent Laid-Open No. 5
It is disclosed by Japanese Patent No. 9-42602.
前記従来の技術において述べた消去ヘッドは、前記公報
における第１１図および第１３図に示されているように
着磁用磁気ヘッド装置を何度もずらす要領でテープへの
接触面に複数磁極の着磁面と無着磁面とを得ていた。こ
のように着磁用磁気ヘッド装置を何度もずらす要領では
着磁に時間と手数がかかつて生産性が悪いのみならず両
側ごへの着磁は得られない。The erasing head described in the above-mentioned prior art has a plurality of magnetic poles on the surface that contacts the tape by repeatedly shifting the magnetizing magnetic head device as shown in FIGS. 11 and 13 in the above-mentioned publication. A magnetized surface and a non-magnetized surface were obtained. In this manner, the method of shifting the magnetizing magnetic head device many times takes time and labor for magnetization, resulting in poor productivity, and it is not possible to magnetize both sides.
本発明は生産性の極めて高い新規の両側面に着磁面をも
つ消去ヘッドを提供することを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a novel erasing head having magnetized surfaces on both sides, which is highly productive.
前記目的を達成するために本発明消去ヘッドは、フェラ
イト等永久磁石材料を以て構成されたテープへの接触面
（１）を正面に有するヘッド本体（２）と、ヘッド本体
（２）の一方全側面および他方全側面に着磁されたＮ極
着磁面（３）およびＳ極着磁面（３）′ と、前記接
触面（１）に交互配列で着磁された部分着磁面（４）お
よび無着磁面（５）とをもつものである。In order to achieve the above object, the erasing head of the present invention includes a head body (2) having a tape contact surface (1) made of a permanent magnetic material such as ferrite on the front side, and one whole side surface of the head body (2). and on the other hand, an N-pole magnetized surface (3) and a S-pole magnetized surface (3)' magnetized on all sides, and a partially magnetized surface (4) magnetized in an alternating arrangement on the contact surface (1). and a non-magnetized surface (5).
第１図乃至第４図に示す第１実施例は粉末のフェライト
等永久磁石材料と以てテープへ弧状接触面（１）を正面
に、また着磁識別用溝（力を一方側面に有するヘッド本
体（２）を成形により構成し、このヘッド本体（２）の
一方全側面および他方全側面にＮ極着磁工程およびＳ極
着磁工程を単極全体着磁法（多数個を一度に着磁する方
法）によシ施して当該一方全側面および他方全側面をＮ
極着磁面（３）およびＳ極着磁面（３）′ とし、然
るのち前記接触面（１）の中央個所に２極着磁用磁気ヘ
ッド装置（８）によるＮ極およびＳ極の着磁工程を一回
で行って同中央個所に部分着磁面（４）および無着磁面
（５）ヲ、また前記接触面（１）の両側個所には着磁工
程を施さずに同両側個所に無着磁面（５）を夫々設けた
ものであり、
第５図乃至第８図に示す第２実施例は前記第１実施例と
同じようにして一方全側面および他方全側面をＮ極着磁
面（３）およびＳ極着磁面（３）′とされたヘッド本体
（２）を構成したのち接触面（１）の中央個所に１極着
磁用磁気ヘッド装置α＠によるＳ極の着磁工程を１回で
行って同中央個所に部分着磁面（４）を、また前記接触
面（１）の両側個所には着磁工程を施さずに同両側個所
に無着磁面（５）を夫々設けたものである。The first embodiment shown in FIGS. 1 to 4 uses a permanent magnetic material such as powdered ferrite to attach the arcuate contact surface (1) to the front of the tape, and the magnetization identification groove (a head having a force on one side). The main body (2) is formed by molding, and the N-pole magnetization process and the S-pole magnetization process are performed on all sides of one side and all sides of the head body (2) using the single-pole whole magnetization method (many pieces are magnetized at once). Magnetizing method) is applied to all sides of one side and all sides of the other side.
A polar magnetized surface (3) and an S-pole magnetized surface (3)' are then formed at the center of the contact surface (1) by a two-pole magnetizing magnetic head device (8). The magnetization process is performed once to create a partially magnetized surface (4) and a non-magnetized surface (5) at the same central location, and the same magnetization process is not performed at both sides of the contact surface (1). In the second embodiment shown in FIGS. 5 to 8, non-magnetized surfaces (5) are provided on both sides respectively, and in the same manner as in the first embodiment, one entire side surface and the other entire side surface are provided. After configuring the head body (2) with a N-pole magnetized surface (3) and an S-pole magnetized surface (3)', a magnetic head device α@ for single-pole magnetization is placed at the center of the contact surface (1). The S-pole magnetization process is performed once to create a partially magnetized surface (4) at the same center, and the magnetization process is not performed at both sides of the contact surface (1), so that both sides are not magnetized. A magnetic surface (5) is provided respectively.
本発明は第９図に示す蛇行する導電線（１荀および３枚
のヨークα段によシ構成されたＳ極着磁用磁気ヘッド装
置αｅを以てテープの接触面にＳ・Ｎ−８のＳ極着磁を
一挙になす方法で実施することもある。The present invention utilizes an S-pole magnetizing magnetic head device αe configured with a meandering conductive line (one yoke and three yokes α stages) as shown in FIG. Pole magnetization may also be carried out in one go.
本発明は前記のようにフェライト等永久磁石材料を以て
構成されたテープへの接触面（１）を正面に有するヘッ
ド本体（２）と、ヘッド本体（２）の一方全側面および
他方全側面に着磁されだＮ極着磁面（３）およびＳ極着
磁面（３）′ と、前記接触面（１）に交互配列で部
分着磁面（４）および無着磁面（５１（５１’とをもつ
ものであって、第４図および第８図に示すようなガウス
曲線αりαＪを得ることができるものである。As described above, the present invention includes a head body (2) having a tape contacting surface (1) on the front surface made of a permanent magnetic material such as ferrite, and a head body (2) that is attached to all sides of one side and all sides of the other side of the head body (2). A partially magnetized surface (4) and a non-magnetized surface (51 (51') are arranged alternately on the contact surface (1). It is possible to obtain Gaussian curves α and αJ as shown in FIGS. 4 and 8.
尚、前記ガウス曲線（１■■は、磁気テープ（１７）
ｆ）”■Ｎ極着磁面（３）の磁界中を通過することおよ
び同Ｎ極着磁面（３）が殊更に強磁界とされていないこ
とによシ録音時のストップ・ノイズおよび消去ノイズが
小さくされ、■Ｎ極着磁面（３）およびテープの接触面
（１）を介してＳ極着磁面（３）′ の磁界中を通過す
ることで消去率がアップされ、■低い山伏部からＳ極着
磁面（３）′ の磁界中を通過することで歪率が良くさ
れることを示している。Note that the Gaussian curve (1■■ is the magnetic tape (17)
f) "■ Stop noise and erasure during recording are caused by passing through the magnetic field of the N-pole magnetized surface (3) and because the N-pole magnetized surface (3) is not in a particularly strong magnetic field. The noise is reduced, and the erasure rate is increased by passing through the magnetic field of the S-pole magnetized surface (3)' through the N-pole magnetized surface (3) and the tape contact surface (1), and the erasure rate is low. It is shown that the strain rate is improved by passing through the magnetic field of the S-pole magnetized surface (3)' from the mountain-bending part.
本発明はフェライト等永久磁石材料を以て正面に有する
ヘッド本体（２）を構成し、このヘッド本体（２）の一
方今側面および他方全側面にＮ極着磁およびＳ極着磁工
程を施して当該一方今側面および他方全側面をＮ極着磁
面（３）およびＳ極着磁面（３）′ とすると共に前記
接触面（１）に着磁用磁気ヘッド装置による着磁工程を
行って交互配列で部分着磁面（４）および無着磁面（５
）を夫々設けたことを特徴とするので、録音時のストツ
プ・ノイズおよび消去ノイ、ズが共に小さく、消去率お
よび歪率が極めて良い製品の提供を可能とする著効かち
るは勿論であるが、特に前記のような構成であるので、
実施例において説明したように成形により得だヘッド本
体（２）に多数個を一度に着磁できる単極全体着磁法を
施したのち尚該ヘッド本体（２）におけるテープへの接
触面（１）に着磁用磁気ヘッド装置（８）α０）α０に
よる１回の部分着磁法を施すこと（第２図および第３図
もしくは第６図および第７図参照）により得ることかで
きるものであって前記従来の着磁用磁気ヘッド装＃をず
らす要領によるものよりも時間も手数もかからない簡単
且つ容易な手段で完成品を得ることができ極めて生産性
がよく量産にも適しているものである。The present invention comprises a head body (2) having a front face made of a permanent magnet material such as ferrite, and performs N-pole magnetization and S-pole magnetization processes on one side surface and all the other side surfaces of the head body (2). One side surface and the other entire side surface are used as the N-pole magnetized surface (3) and the S-pole magnetized surface (3)', and the contact surface (1) is alternately subjected to a magnetization process using a magnetic head device for magnetization. Partially magnetized surface (4) and non-magnetized surface (5) in the array
), it is of course highly effective in providing products with low stop noise and low erase noise during recording, and extremely high erase and distortion rates. , especially since the configuration is as described above,
As explained in the embodiment, after applying the monopolar whole magnetization method that can magnetize many pieces at once to the head body (2) obtained by molding, the contact surface (1) of the head body (2) to the tape is ) can be obtained by subjecting the magnetic head device for magnetization (8) α0) to a single partial magnetization method using α0 (see Figures 2 and 3 or Figures 6 and 7). Therefore, it is possible to obtain a finished product by a simple and easy means that requires less time and labor than the conventional method of shifting the magnetizing magnetic head device, and is extremely productive and suitable for mass production. be.
第１図は本発明消去ヘンドの第１実施例を示す全体の斜
視図、第２図は同じく製造工程を示すフローチャート、
第３図は部分着磁の工程を示す説明図、第１図はガウス
曲線図、第５図は第２実施レリを示す全体の斜視図、第
６図は同じく製造工程を示すフローチャート、第７図は
部分着磁の工程を示す説明図、第８図はガウス曲線図、
第９図は第３実施例の部分着磁工程を示す説明図である
。
（１）−接触面、（２）・・・ヘッド本体、（３）・・
・Ｎ極着磁面、（３）′ ・・・Ｓ極着磁面、（４）・
・・部分着磁面、（５）・・・無着磁面、（７）・・・
着磁識別溝、（８）・・・２極着磁用磁気ヘッド装置、
Ｏｏｌ・・・ｌ極７ゴ磁用磁気ヘンド装置、α２α３）
・・・ガウス曲勝、ＯＤ・・・４電線、（１勺・・ヨー
ク、（ｉθ・・・３極着磁用磁気ヘンド装置、卸・・・
磁気テープ。
第５図
第８図
第６図FIG. 1 is an overall perspective view showing the first embodiment of the erasing hand of the present invention, FIG. 2 is a flowchart showing the manufacturing process,
FIG. 3 is an explanatory diagram showing the process of partial magnetization, FIG. 1 is a Gauss curve diagram, FIG. 5 is an overall perspective view showing the second embodiment, FIG. 6 is a flowchart showing the manufacturing process, The figure is an explanatory diagram showing the process of partial magnetization, Figure 8 is a Gaussian curve diagram,
FIG. 9 is an explanatory diagram showing the partial magnetization process of the third embodiment. (1) - contact surface, (2)...head body, (3)...
・N-pole magnetized surface, (3)'...S-pole magnetized surface, (4)・
...partially magnetized surface, (5)...non-magnetized surface, (7)...
Magnetization identification groove, (8)...magnetic head device for two-pole magnetization,
Ool...l pole 7 magnetic hend device, α2α3)
...Gauss curve, OD...4 electric wires, (1...yoke, (iθ...magnetic hend device for 3-pole magnetization, wholesale...
Magnetic tape. Figure 5 Figure 8 Figure 6
Claims (1)
接触面（１）を正面に有するヘッド本体（２）と、ヘッ
ド本体（２）の一方全側面および他方全側面に着磁され
たＮ極着磁面（３）およびＳ極着磁面（３）′と、前記
接触面（１）に交互配列で着磁された部分着磁面（４）
および無着磁面（５）とをもつことを特徴とする消去ヘ
ッド。A head body (2) having a tape contact surface (1) on the front made of a permanent magnetic material such as ferrite, and a N-pole magnetized on one side and all the other sides of the head body (2). surface (3) and the S-pole magnetized surface (3)', and a partially magnetized surface (4) magnetized in an alternating arrangement on the contact surface (1).
and a non-magnetized surface (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63289738A JPH0792899B2 (en) | 1988-11-16 | 1988-11-16 | Erasing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63289738A JPH0792899B2 (en) | 1988-11-16 | 1988-11-16 | Erasing head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02134708A true JPH02134708A (en) | 1990-05-23 |
| JPH0792899B2 JPH0792899B2 (en) | 1995-10-09 |
Family
ID=17747117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63289738A Expired - Lifetime JPH0792899B2 (en) | 1988-11-16 | 1988-11-16 | Erasing head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0792899B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149884A1 (en) | 2007-06-04 | 2008-12-11 | Espo Chemicals, Corp. | Cleaning agent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57172507A (en) * | 1981-04-17 | 1982-10-23 | Alps Electric Co Ltd | Erasing head |
-
1988
- 1988-11-16 JP JP63289738A patent/JPH0792899B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57172507A (en) * | 1981-04-17 | 1982-10-23 | Alps Electric Co Ltd | Erasing head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008149884A1 (en) | 2007-06-04 | 2008-12-11 | Espo Chemicals, Corp. | Cleaning agent |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0792899B2 (en) | 1995-10-09 |
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