JPS63112810A - Magnetic head - Google Patents
Magnetic headInfo
- Publication number
- JPS63112810A JPS63112810A JP25463386A JP25463386A JPS63112810A JP S63112810 A JPS63112810 A JP S63112810A JP 25463386 A JP25463386 A JP 25463386A JP 25463386 A JP25463386 A JP 25463386A JP S63112810 A JPS63112810 A JP S63112810A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- head
- magnetic sheet
- foreign matter
- head chip
- 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
- 239000006247 magnetic powder Substances 0.000 description 7
- 235000010724 Wisteria floribunda Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明はドロップアウトの発生原因を自らが作り出すこ
とを防止した磁気ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a magnetic head that prevents itself from causing dropouts.
〈従来の技術〉
電子カメラ用磁気シートあるいはフロッピディスク等の
磁気シートに記録した信号を再生する際、その再生信号
の一部が欠損するドロップアウトの発生が問題となって
いる。このドロップアウトとしては、磁気シートの製造
工程における磁性層の塗りむらあるいは損傷等に起因す
るものと、磁気シートの歪や異物の付着によるヘッドタ
ッチ不良に起因するものがある。<Prior Art> When reproducing a signal recorded on a magnetic sheet for an electronic camera or a magnetic sheet such as a floppy disk, there is a problem of dropout, in which a part of the reproduced signal is lost. These dropouts include those caused by uneven coating or damage to the magnetic layer during the manufacturing process of the magnetic sheet, and those caused by poor head contact due to distortion of the magnetic sheet or adhesion of foreign matter.
ところで、第７図に示すように、従来の磁気ヘッド１１
は台板１２にヘッドチップ１３が固着されて成っており
、ヘッドチップ１３先端の形状は、磁気シート１４に摺
接する摺接面１３ａは若干凸状に湾曲すると共に、その
両側の側面１３ ｂ、 １３ ｃはそれぞれ磁気シート
１４の磁性面１４ａに対して約１０″〜２０°傾斜する
ものとなっている。尚、図中の矢印は磁気シート１４の
移動方向を表わしている。By the way, as shown in FIG. 7, the conventional magnetic head 11
consists of a head chip 13 fixed to a base plate 12, and the shape of the tip of the head chip 13 is such that a sliding contact surface 13a that contacts the magnetic sheet 14 is slightly curved in a convex shape, and side surfaces 13b on both sides thereof, 13c are inclined at an angle of about 10'' to 20° with respect to the magnetic surface 14a of the magnetic sheet 14. The arrows in the figure indicate the direction of movement of the magnetic sheet 14.
〈発明が解決しようとする問題点〉
このような磁気へラド１１を磁気シーＩ・１４に摺接さ
せて記録、再生を行う場合、特に磁気シート１４の使用
初期状態においては、磁気へラド１１により磁気シート
１４の磁性面１４ａ上の突出した若干の磁性粉が削り取
られるのが実状である。ところが、従来の磁気ヘッド１
１では、上述の削り取られた磁性粉を初めとする塵埃、
その他の微小異物がヘッドチップ１３の磁気シート１４
の移動方向下流側の側面１３ｃに堆積し、さらに堆積し
た異物が磁気シート１４の磁性面１４ａに移転して付着
し、それが磁気シート１４と共に１回転して来て、ヘッ
ド摺接面１３ａと磁気シート面１４ａとの間でプレスさ
れて磁気シート面１４ｇにとびり付き、それがドロップ
アウトの原因となるという問題点があった。すなわち、
異物が付着した磁気シート１４を用いて記録、再生をす
ると、ヘッドチップ１３が異物の付着場所で磁性面１４
ａから飛び上がり、ヘッドタッチが不良となるため、ド
ロップアウトが発生してしまう。<Problems to be Solved by the Invention> When performing recording and reproduction by bringing such a magnetic helad 11 into sliding contact with the magnetic sheet I.14, especially in the initial state of use of the magnetic sheet 14, the magnetic helad 11 In reality, some of the protruding magnetic powder on the magnetic surface 14a of the magnetic sheet 14 is scraped off. However, the conventional magnetic head 1
In 1, dust including the above-mentioned scraped magnetic powder,
Other minute foreign matter may be present in the magnetic sheet 14 of the head chip 13.
Further deposited foreign matter is transferred and attached to the magnetic surface 14a of the magnetic sheet 14, rotates once with the magnetic sheet 14, and comes into contact with the head sliding contact surface 13a. There was a problem in that it was pressed between the magnetic sheet surface 14a and stuck to the magnetic sheet surface 14g, causing dropout. That is,
When recording or reproducing using the magnetic sheet 14 to which foreign matter has adhered, the head chip 13 touches the magnetic surface 14 at the place where the foreign matter has adhered.
The head jumps up from a, resulting in poor head touch, resulting in dropout.
本発明は、このような事情に鑑み、ドロップアウトの発
生原因となる記録、再生時における磁気ヘッドから磁気
シートへの異物の移転を防止し得る磁気ヘッドを提供す
ることを目的とするものである。In view of these circumstances, it is an object of the present invention to provide a magnetic head that can prevent foreign matter from being transferred from the magnetic head to the magnetic sheet during recording and reproduction, which causes dropouts. .
〈問題点をＭ決するための手段〉
この目的を達成するための本発明にかかる磁気ヘッドの
構成は、磁気シートに摺接する摺接面に連続する磁気シ
ート移動方向下流側の側面が磁気シートに摺接する面に
対して略直角となるように段差が設けられると共に該段
差がギャップデプス以上の深い位置まで形成されたヘッ
ドチップを有することを特徴としている。<Means for resolving the problem> The configuration of the magnetic head according to the present invention for achieving this object is such that the side surface on the downstream side in the direction of movement of the magnetic sheet that is continuous with the sliding contact surface that comes into sliding contact with the magnetic sheet is in contact with the magnetic sheet. It is characterized by having a head chip in which a step is provided so as to be substantially perpendicular to the surface in sliding contact, and the step is formed to a depth greater than the gap depth.
く作 用〉
磁気ヘッドのへラドチップの下流側の側面が磁気シート
の磁性面に対して略直角となっているため、その側面に
磁性粉等の異物が堆積することはなく、従って異物の磁
気シートへの移転も生じない。また、段差はギャップデ
プス以上に深いので摺接面が摩耗してもギャップデプス
がある限り側面の直角が維持される。Effect> Since the side surface of the downstream side of the helad tip of the magnetic head is approximately perpendicular to the magnetic surface of the magnetic sheet, foreign matter such as magnetic powder does not accumulate on that side surface, and therefore the magnetic No transfer to the sheet occurs either. Furthermore, since the step is deeper than the gap depth, even if the sliding surface is worn, the right angle of the side surface is maintained as long as the gap depth is present.
一３＝ 〈実 施 例〉 以下、本発明の実施例を図面により詳細に説明する。13 = <Example> Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は本発明の一実施例にかかるヘッドチップの正面
図、第２図はその磁気ヘッドの正面図、第３図はヘッド
チップ先端の拡大図、第４図はその平面図、第５図はそ
の側面図である。第１図〜第５図に示すように、本発明
の一実施例にかかる磁気ヘッド２１は台板２２にヘッド
チップ２３を固着して成り、ヘッドチップ２３の先端形
状は磁気シート１４に摺接する摺接面２３ａの両側の側
面２３ｂ、 ２３ｃが磁気シート１４の磁性面１４ａに
対して略直角となるように削り落された柱状の形状とな
っている。すなわち、摺接面２３ａは中心にヘッドギャ
ップ２３ｄを有すると共に中央部が突出した湾曲形状を
しており、その摺接面２３ａにそれぞれ連続する磁気シ
ート１４移動方向上流及び下流側の両側面２３ｂ、２３
ｃは摺接面２３ａと略直角を成し、第３図に示されるよ
うに、その側面２３ｂ、２３ｃを介して摺接面２３ａと
へラドチップ２３の先端平坦面２３ｄとの間に段差Ｈが
形成されている。この段差ＨはギャップデプスＧｄ以上
の深い位置まで形成されて、Ｈ２：Ｇｄとなっており、
従って、ヘッドチップ２３のｔＭ 接面２３ ａが摩耗
してヘッドチップ２３が使用不能となるまで、柱状部分
は先端平坦面２３ｄから突出した状態を保つことができ
、ヘッドチップ２３の寿命が尽きるまで側面２３ ｂ、
２３ ｃの摺接面２３ａに対する直角を維持できる。1 is a front view of a head chip according to an embodiment of the present invention, FIG. 2 is a front view of the magnetic head, FIG. 3 is an enlarged view of the tip of the head chip, FIG. 4 is a plan view thereof, and FIG. The figure is a side view thereof. As shown in FIGS. 1 to 5, a magnetic head 21 according to an embodiment of the present invention has a head chip 23 fixed to a base plate 22, and the tip of the head chip 23 has a shape that slides into contact with the magnetic sheet 14. Side surfaces 23b and 23c on both sides of the sliding surface 23a are shaved off so as to be substantially perpendicular to the magnetic surface 14a of the magnetic sheet 14, forming a columnar shape. That is, the sliding contact surface 23a has a head gap 23d at the center and has a curved shape with a protruding central portion, and both side surfaces 23b on the upstream and downstream sides in the direction of movement of the magnetic sheet 14 are continuous to the sliding contact surface 23a, respectively. 23
c is approximately perpendicular to the sliding surface 23a, and as shown in FIG. It is formed. This step H is formed to a deeper position than the gap depth Gd, and becomes H2:Gd.
Therefore, until the tM contact surface 23a of the head chip 23 wears out and the head chip 23 becomes unusable, the columnar portion can maintain a state protruding from the flat end surface 23d, and until the life of the head chip 23 ends. side surface 23b,
23c can be maintained at right angles to the sliding surface 23a.
また、第４図に示されるように、本実施例ではヘッドチ
ップ２３の摺接面２３ａの四隅２３ｅを円弧状に切除し
ている。これは、摺接面２３ａを磁気シート１４に摺接
させたときに、摺接面２３ａの四隅２３ｅが角張ってい
るとそこが優先的に強く磁気シート１４に当たり、それ
によって磁気シート１４に対するヘッドギャップ２３ｄ
部分の接触が不良となったり、磁気シート１４が傷付け
られるのを防止するためのものである。尚、第６図に示
すような・＼ラドチップ２３の摺接面の四隅２３ｅが角
張っているものについても、本発明を実施し得ることは
勿論である。Further, as shown in FIG. 4, in this embodiment, the four corners 23e of the sliding surface 23a of the head chip 23 are cut out in an arc shape. This is because when the sliding contact surface 23a is brought into sliding contact with the magnetic sheet 14, if the four corners 23e of the sliding contact surface 23a are angular, those corners will preferentially and strongly contact the magnetic sheet 14, thereby causing a head gap with respect to the magnetic sheet 14. 23d
This is to prevent poor contact between parts and damage to the magnetic sheet 14. It goes without saying that the present invention can also be practiced with respect to a RAD tip 23 whose sliding contact surface has four corners 23e that are angular, as shown in FIG.
このような磁気ヘッド２１においては、回転する磁気シ
ート１４にそのヘッドチップ２３の摺接面２３ａに摺接
させて記録、再生を行うが、ヘッドチップ２３の下流側
の側面２３ｃが磁気シート１４の磁性面１４ａに対して
略直角となっているため、その側面２３ｃに削り取られ
た磁性粉等の異物が堆積することがなく、従ってそれら
異物の磁気シート１４への移転付着も生じることはない
。In such a magnetic head 21, recording and reproduction are performed by bringing the rotating magnetic sheet 14 into sliding contact with the sliding contact surface 23a of the head chip 23. However, the downstream side surface 23c of the head chip 23 Since it is substantially perpendicular to the magnetic surface 14a, foreign matter such as scraped magnetic powder does not accumulate on the side surface 23c, and therefore no foreign matter is transferred or attached to the magnetic sheet 14.
一方、本実施例ではへラドチップ２３の下流側の側面２
３ｃのみならず、上流側の側面２３ｂも磁気シート１４
の磁性面１４ａに対して略直角としており、それにより
その側面２３ｂと摺接面２３ａとで構成されるエツジで
積極的に磁気シート１４の磁性ｍ１１４ａの磁性粉の塊
を削り取るよう企図している。従って本磁気ヘッド２１
を用いれば、将来ドロップアウトの発生原因となる可能
性の高い磁性粉の塊を記録、再生を行いながら除去でき
、しかもこの磁性粉は上述のように磁気シート１４に再
付着することはない。On the other hand, in this embodiment, the downstream side surface 2 of the helad tip 23
Not only the magnetic sheet 3c but also the upstream side surface 23b
It is designed to be approximately perpendicular to the magnetic surface 14a of the magnetic sheet 14, so that the edge formed by the side surface 23b and the sliding surface 23a actively scrapes off lumps of magnetic powder of the magnetic m114a of the magnetic sheet 14. . Therefore, this magnetic head 21
By using this, lumps of magnetic powder that are likely to cause dropouts in the future can be removed while recording and reproducing, and moreover, this magnetic powder will not re-adhere to the magnetic sheet 14 as described above.
〈発明の効果〉
以上、一実施例を挙げて詳細に説明したように本発明に
よれば、磁気シートに摺接する摺接面に連続する磁気シ
ート移動方向下流側の側面が磁気シートに摺接する面に
対して略直角となるように段差を設けたので、その側面
に異物が堆積することがなく、従って、記録、再生時に
おける磁気ヘッドから磁気シートへの異物の移転付着を
防止することが可能となる。<Effects of the Invention> As described above in detail with reference to one embodiment, according to the present invention, the side surface on the downstream side in the direction of movement of the magnetic sheet that is continuous with the sliding surface that slides in contact with the magnetic sheet comes into sliding contact with the magnetic sheet. Since the step is provided to be approximately perpendicular to the surface, foreign matter does not accumulate on the side surface, and therefore, it is possible to prevent foreign matter from being transferred from the magnetic head to the magnetic sheet during recording and reproduction. It becomes possible.
第１図は本発明の一実施例にかかるヘッドチップの正面
図、第２図はその磁気ヘッドの正面図、第３図はヘッド
チップ先端の拡大図、第４図はその平面図、第５図はそ
の側面図、第６図−７＝
は本発明の他の実施例にかかるヘッドチップ先端の平面
図、第７図は従来例にかかる磁気ヘッド要部の正面図で
ある。
図 面 中、
１４は磁気シート、
１４ａは磁性面、
２１は磁気ヘッド、
２３はへラドチップ、
２３ａは摺接面、
２３ｂ、２３ｃは側面である。
特 許 出 願 人
富士写真フィルム株式会社
富士マグネディスク株式会社
代 理 人1 is a front view of a head chip according to an embodiment of the present invention, FIG. 2 is a front view of the magnetic head, FIG. 3 is an enlarged view of the tip of the head chip, FIG. 4 is a plan view thereof, and FIG. 6-7 is a plan view of the tip of a head chip according to another embodiment of the present invention, and FIG. 7 is a front view of the main part of a magnetic head according to a conventional example. In the drawing, 14 is a magnetic sheet, 14a is a magnetic surface, 21 is a magnetic head, 23 is a helad chip, 23a is a sliding contact surface, and 23b and 23c are side surfaces. Patent application Fuji Photo Film Co., Ltd. Fuji Magnedisc Co., Ltd. Agent
Claims (1)
方向下流側の側面が磁気シートに摺接する面に対して略
直角となるように段差が設けられると共に該段差がギャ
ップデプス以上の深い位置まで形成されたヘッドチップ
を有する磁気ヘッド。A step is provided so that the side surface on the downstream side in the direction of movement of the magnetic sheet that is continuous with the sliding surface that is in sliding contact with the magnetic plate is approximately perpendicular to the surface that is in sliding contact with the magnetic sheet, and the step is extended to a position deeper than the gap depth. A magnetic head having a formed head chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25463386A JPS63112810A (en) | 1986-10-28 | 1986-10-28 | Magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25463386A JPS63112810A (en) | 1986-10-28 | 1986-10-28 | Magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63112810A true JPS63112810A (en) | 1988-05-17 |
Family
ID=17267729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25463386A Pending JPS63112810A (en) | 1986-10-28 | 1986-10-28 | Magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63112810A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034623A (en) * | 2000-07-24 | 2002-02-05 | Hisatoshi Otani | Walking stick |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994223A (en) * | 1983-10-31 | 1984-05-30 | Hitachi Ltd | Magnetic head |
| JPS59213013A (en) * | 1983-05-18 | 1984-12-01 | Matsushita Electric Ind Co Ltd | Magnetic head |
-
1986
- 1986-10-28 JP JP25463386A patent/JPS63112810A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59213013A (en) * | 1983-05-18 | 1984-12-01 | Matsushita Electric Ind Co Ltd | Magnetic head |
| JPS5994223A (en) * | 1983-10-31 | 1984-05-30 | Hitachi Ltd | Magnetic head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002034623A (en) * | 2000-07-24 | 2002-02-05 | Hisatoshi Otani | Walking stick |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5812655B2 (en) | Manufacturing method for record needles | |
| JPS63112810A (en) | Magnetic head | |
| JPS5831664B2 (en) | Jixi Tono Cleaning Hohou | |
| US4976020A (en) | Magnetic sheet polishing device | |
| JPS63112827A (en) | Inspecting method for magnetic sheet | |
| JPS63106922A (en) | Polishing device for magnetic sheet | |
| JP3384710B2 (en) | Master information carrier and method of manufacturing the same | |
| JPS5816249B2 (en) | Method for manufacturing tape-shaped magnetic recording medium | |
| US5848311A (en) | Film pressure plate of a camera for use with a film having a magnetic recording portion | |
| JPS606884Y2 (en) | Recycled needles for stampers | |
| JPS6020162Y2 (en) | Recycled needles for stampers | |
| JPH0527807U (en) | Magnetic head | |
| JPS5936336B2 (en) | scanning needle | |
| JPS5845097B2 (en) | Capacitive video disc playback needle | |
| JPS5845601A (en) | Cutting method of disk made of vinyl chloride and cutting stylus device | |
| JP3252583B2 (en) | Magnetic head and method of manufacturing the same | |
| JPH0793728A (en) | Magnetic recording medium | |
| JPS6230183Y2 (en) | ||
| JPS5819706Y2 (en) | magnetic head | |
| KR800000207B1 (en) | Signal record-reproducing system | |
| JPH11203628A (en) | Combined magnetic head and magnetic recording/ reproducing device | |
| JP2000048314A (en) | Head and recording and reproducing device | |
| JPH11126304A (en) | Magnetic head and magnetic recording or reproducing device | |
| JPS62234214A (en) | Production of magnetic head | |
| JPH0479004A (en) | Magnetic head |