JP2527577B2 - Recording head - Google Patents
Recording headInfo
- Publication number
- JP2527577B2 JP2527577B2 JP62287703A JP28770387A JP2527577B2 JP 2527577 B2 JP2527577 B2 JP 2527577B2 JP 62287703 A JP62287703 A JP 62287703A JP 28770387 A JP28770387 A JP 28770387A JP 2527577 B2 JP2527577 B2 JP 2527577B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- recording head
- superconducting
- recording
- magnetic field
- 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.)
- Expired - Lifetime
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- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Magnetic Heads (AREA)
Description
【発明の詳細な説明】 （イ） 産業上の利用分野 本発明は記録ヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a recording head.
（ロ） 従来の技術 記録パターンに応じた磁界パターンを発生するもの
は、例えば多素子磁気記録ヘッドとして知られている
（実開昭51−154515号公報等参照）。この様なヘッドに
あつては、各記録ドットに対応して磁界発生用コイルが
必要であり、このため、一度に記録し得るドット数を多
くしようとすればそれだけ多くのコイルを準備しなけれ
ばならず記録ヘッドの製造が煩雑となる。(B) Conventional Technology A device that generates a magnetic field pattern according to a recording pattern is known as, for example, a multi-element magnetic recording head (see Japanese Utility Model Laid-Open No. 51-154515, etc.). Such a head needs a magnetic field generating coil corresponding to each recording dot. Therefore, if the number of dots that can be recorded at one time is increased, many coils must be prepared. As a result, the manufacturing of the recording head becomes complicated.
（ハ） 発明が解決しようとする問題点 本発明は構造が簡単にして、かつ製造の容易な記録ヘ
ッドを提供するものである。(C) Problems to be Solved by the Invention The present invention provides a recording head having a simple structure and easy to manufacture.
（ニ） 問題点を解決するための手段 本発明の記録ヘッドは透磁性基板、該基板表面に被着
された超伝導膜、この膜に対し、一方の側から、その膜
面にほゞ垂直な磁界を付与する磁界付与手段、上記磁界
の付与された上記超伝導膜の領域において、記録パター
ンに応じて常伝導状態部分を作るべく上記超伝導膜に関
連づけられた超伝導状態破壊手段を具備することを特徴
とする。(D) Means for Solving the Problems The recording head of the present invention comprises a magnetically permeable substrate, a superconducting film deposited on the surface of the substrate, and one side of this film, which is approximately perpendicular to the film surface. Magnetic field applying means for applying a different magnetic field, and superconducting state destroying means associated with the superconducting film so as to form a normal conducting portion in accordance with a recording pattern in the region of the superconducting film to which the magnetic field is applied. It is characterized by doing.
（ホ） 作用 本発明の記録ヘッドにあつては、超伝導膜のマイスナ
ー効果により、磁界付与手段の作る磁界は超伝導膜を通
り抜けることができない。記録時には記録パターンに応
じて超伝導膜の領域が常伝導状態となるので、斯る領域
を上記磁界が通り抜け、従つて記録パターンに対応した
磁界パターンが得られる。(E) Operation In the recording head of the present invention, the magnetic field generated by the magnetic field applying means cannot pass through the superconducting film due to the Meissner effect of the superconducting film. At the time of recording, the region of the superconducting film is in the normal conduction state according to the recording pattern, so that the magnetic field passes through such region, and thus a magnetic field pattern corresponding to the recording pattern is obtained.
（ヘ） 実施例 第４図に本発明の記録ヘッド（10）を用いた記録装置
を示す。記録ヘッド（10）は記録紙（１）と近接対向す
る前面（10a）を有すると共に、この前面をほゞ垂直に
貫通し、かつ記録パターンに応じた強度分布の磁界を発
生する。トナー供給器（２）は、記録ヘッドの前面（10
a）と近接対向して配置された回転円筒状のスリーブ（2
a）を有し、このスリーブ表面には磁性トナーが保有さ
れている。即ち、トナー供給管（２）は、送りローラ
（３）（３）により移送される普通記録紙（１）に対
し、記録ヘッド（10）の作る磁界に応じてトナーを供給
する。この様に記録紙（１）に付与されたトナーは記録
パターンに対応したものであり、斯るパターンのトナー
はその後加熱及び又は加圧ローラからなる定着器（４）
の作用で記録紙（１）上に定着される。尚トナー供給器
（２）や定着器（４）は、それら自体電子写真記録法に
おいて周知である。(F) Example FIG. 4 shows a recording apparatus using the recording head (10) of the present invention. The recording head (10) has a front surface (10a) closely facing the recording paper (1), penetrates the front surface almost vertically, and generates a magnetic field having an intensity distribution according to the recording pattern. The toner feeder (2) is installed on the front side of the recording head (10
a) A rotating cylindrical sleeve (2
a), and the magnetic toner is retained on the surface of this sleeve. That is, the toner supply pipe (2) supplies toner to the ordinary recording paper (1) transferred by the feed rollers (3) and (3) according to the magnetic field generated by the recording head (10). The toner thus applied to the recording paper (1) corresponds to the recording pattern, and the toner of such a pattern is then a fixing device (4) including a heating and / or pressure roller.
By the action of, it is fixed on the recording paper (1). The toner supply device (2) and the fixing device (4) are themselves well known in the electrophotographic recording method.
本発明の記録ヘッド（10）を用い得る記録装置の他の
例は、第４図において、普通記録紙（１）を磁気テープ
に替えると共に、トナー供給器（２）や定着器（４）を
省略した形態である。即ち、この場合記録ヘッド（10）
から記録パターンが直接磁気テープに書込まれる。Another example of a recording apparatus that can use the recording head (10) of the present invention is shown in FIG. 4 in which the ordinary recording paper (1) is replaced with a magnetic tape, and the toner supply device (2) and the fixing device (4) are provided. It is an omitted form. That is, in this case, the recording head (10)
The recording pattern is directly written on the magnetic tape.
第１図に記録ヘッド（10）の詳細を示す。0.1mm〜1mm
厚さのMgO基板（11）上に0.01μｍ〜100μｍ厚さの超伝
導膜（12）が被着されている。この膜はＹ、Ba、cu、Ｏ
の焼結体をターゲットにしてマグネトロンスパッタ法に
より形成され、YBa2Cu3O7-x（但しｘは0.5〜0.1）の組
成を持ち、その臨界温度は80゜Ｋである。FIG. 1 shows details of the recording head (10). 0.1mm-1mm
A superconducting film (12) having a thickness of 0.01 μm to 100 μm is deposited on a MgO substrate (11) having a thickness. This film is Y, Ba, cu, O
Is formed by a magnetron sputtering method using the sintered body as a target and has a composition of YBa2Cu3O7 -x (where x is 0.5 to 0.1), and its critical temperature is 80 ° K.
超伝導膜（12）上には、更にSiO2からなる0.1μｍ厚
さの絶縁膜（13）を介して発熱抵抗膜（14）（14）…が
一列に所要個数配列被着されると共に、これら各抵抗膜
に対するAl給電路（15）（15）…が被着されている。発
熱抵抗膜（14）の各々は0.1μｍの厚さと、100μｍ×70
μｍの面積を有し、600Ωの抵抗値を持つ。この様な抵
抗膜の形成はスパッタ蒸着により行なわれる。Ta2O3か
らなる対摩耗膜（16）が10μｍの厚さで発熱抵抗膜（1
4）やAl給電路（15）を覆い、この耐摩耗膜（16）の表
面が前述の記録ヘッド前面（10a）を構成する。On the superconducting film (12), a desired number of heating resistance films (14) (14) ... Are further deposited in a line through an insulating film (13) made of SiO 2 and having a thickness of 0.1 μm. Al power supply paths (15) (15) ... Are attached to each resistance film. Each heating resistance film (14) has a thickness of 0.1 μm and 100 μm x 70
It has an area of μm and a resistance value of 600Ω. The formation of such a resistance film is performed by sputter deposition. The wear resistant film (16) made of Ta2O3 has a thickness of 10 μm and has a heating resistance film (1
The surface of the wear-resistant film (16) covers the front surface (10a) of the recording head, which covers the 4) and the Al power supply path (15).
アルミニウムからなる透磁性のダクト（17）が基板
（11）の裏面に固着され、更に磁界付与手段としての永
久磁石（18）がダクト（17）の下面に固定されている。
この磁石は少なくとも発熱抵抗膜（14）の配列領域に対
し、超伝導膜（12）並びに、記録ヘッド前面（10a）に
垂直な磁界を付与する。A magnetically permeable duct (17) made of aluminum is fixed to the back surface of the substrate (11), and a permanent magnet (18) as a magnetic field applying means is fixed to the lower surface of the duct (17).
The magnet applies a magnetic field perpendicular to the superconducting film (12) and the front surface (10a) of the recording head to at least the array region of the heating resistance film (14).
上記記録ヘッドにおいて、ダウト（17）には液体窒素
が貫流し、これにより、超伝導膜（12）は冷却され、超
伝導状態にある。よつて非記録時には永久磁石（18）の
作る磁界はマイスナー効果のために、超伝導膜（12）を
通り抜けることができない。In the recording head, liquid nitrogen flows through the dough (17), whereby the superconducting film (12) is cooled and is in a superconducting state. Therefore, during non-recording, the magnetic field created by the permanent magnet (18) cannot pass through the superconducting film (12) due to the Meissner effect.
一方、記録時には、記録パターンに応じて発熱抵抗膜
（14）（14）…のうち所定のものが通電加熱される。こ
のときの発熱量は当該抵抗膜直下の超伝導膜部分を臨界
温度以上に加熱して、その部分に超伝導状態を破壊し、
常伝導状態に戻すに十分な値に設定される。本実施例で
はこのために波高値15V、パルス幅0.1〜1msecのパルス
電圧が選択された発熱抵抗膜（14）に印加される。永久
磁石（18）の作る磁界は、超伝導膜（12）内に作られた
常伝導状態部分のみをほゞ垂直に通過し、記録ヘッド前
面（10a）に現出する。こゝに現出せる磁界強度分布が
記録せんとするパターンに対応していることは言うまで
もない。On the other hand, at the time of recording, a predetermined one of the heat generating resistance films (14) (14) ... Is electrically heated according to the recording pattern. The amount of heat generated at this time is to heat the superconducting film portion directly below the resistance film to a critical temperature or higher to destroy the superconducting state in that portion,
It is set to a value sufficient to return to the normal conduction state. For this reason, in this embodiment, a pulse voltage having a peak value of 15 V and a pulse width of 0.1 to 1 msec is applied to the selected heating resistance film (14). The magnetic field generated by the permanent magnet (18) passes almost perpendicularly only through the normal-conduction state portion formed in the superconducting film (12), and appears on the front surface (10a) of the recording head. It goes without saying that the magnetic field strength distribution that can appear here corresponds to the pattern to be recorded.
記録ヘッド（10）は、発熱抵抗膜（14）の配列方向が
記録紙（１）の走行方向に直角になるべく配置され、発
熱抵抗膜（14）の配列方向に沿う１ライン分の記録がな
される。この記録動作は上記パルス電圧の消滅と共に終
り、超伝導膜（12）はその全領域において再び超伝導膜
状態に戻る。The recording head (10) is arranged such that the arrangement direction of the heating resistance film (14) is at right angles to the running direction of the recording paper (1), and recording for one line along the arrangement direction of the heating resistance film (14) is performed. It The recording operation ends with the disappearance of the pulse voltage, and the superconducting film (12) returns to the superconducting film state in the entire region.
超伝導状態破壊手段として、上記実施例では発熱抵抗
膜が使用されたが、それは以下の如く種々変更し得る。As the means for destroying the superconducting state, the heating resistance film is used in the above embodiment, but it can be variously modified as follows.
第２図はレーザビームにより超伝導状態を破壊する様
にした他の記録ヘッド（10）を示す。第１図と同様にMg
O基板（11）の表面に超伝導膜（12）が被着形成される
が、超伝導膜（12）の表面に液体窒素貫流用ダクト（1
7）が固着され、このダクトの表面が前述の記録ヘッド
前面（10a）を構成する。FIG. 2 shows another recording head (10) in which the superconducting state is destroyed by a laser beam. Mg as in Fig. 1
The superconducting film (12) is formed on the surface of the O substrate (11), and the liquid nitrogen flow-through duct (1) is formed on the surface of the superconducting film (12).
7) is fixed, and the surface of this duct constitutes the above-mentioned recording head front surface (10a).
基板（11）の裏面に長尺状永久磁石（18）が配置さ
れ、この磁石は超伝導膜（12）並びに記録ヘッド前面
（10a）に対し垂直な磁界を付与する。超伝導膜（12）
は、ダクト（17）内を流れる液体窒素により冷却されて
超伝導状態にあり、従つて前述の如く、永久磁石（18）
により付与される磁界は超伝導膜（12）を通り抜けな
い。A long permanent magnet (18) is arranged on the back surface of the substrate (11), and this magnet applies a magnetic field perpendicular to the superconducting film (12) and the front surface (10a) of the recording head. Superconducting film (12)
Is in a superconducting state by being cooled by the liquid nitrogen flowing in the duct (17), and therefore, as described above, the permanent magnet (18) is
The magnetic field applied by the magnetic field does not pass through the superconducting film (12).
超伝導状態破壊手段として、レーザビーム放射源（2
0）、ポリゴンミラー（21）及びｆ−θレンズ（22）が
備えられている。ポリゴンミラー（21）は、その回転に
より放射源（20）の出力するレーザビーム（23）を永久
磁石（18）の長手方向に沿つて走査し、超伝導膜（12）
に向わしめる。レーザビーム（23）は780nm程度の波長
を有し、この照射を受けた超伝導膜部分は加熱により超
伝導状態を破壊されて常伝導状態になり、照射が無くな
ると再び超伝導状態に戻る。従つて記録パターンに応じ
てポリゴンミラー（21）の回転と同期的放射源（20）を
駆動することにより、記録パターンに対応した分布の磁
界が超伝導膜（12）を透過して記録ヘッド前面（10a）
より現出する。Laser beam radiation source (2
0), a polygon mirror (21) and an f-θ lens (22). The rotation of the polygon mirror (21) causes the laser beam (23) output from the radiation source (20) to scan along the longitudinal direction of the permanent magnet (18), and the superconducting film (12).
Turn to. The laser beam (23) has a wavelength of about 780 nm, and the superconducting film portion that has received this irradiation destroys the superconducting state by heating and becomes the normal conducting state. Accordingly, by rotating the polygon mirror (21) and the synchronous radiation source (20) according to the recording pattern, a magnetic field having a distribution corresponding to the recording pattern passes through the superconducting film (12) and the front surface of the recording head. (10a)
Show up more.
第３図は、発行ダイオードの出力光により超伝導状態
を破壊する様にした更に他の記録ヘッド（10）を示す。
第２図と同一部分には同一番号を付すがこの実施例の特
徴として、永久磁石（18）の長手方向に沿う配置の発光
ダイオードアレイ（30）と、このアレイの出力する光を
超伝導膜（12）に指向するセルフオックレンズアレイ
（31）とが設けられ、記録パターンに応じて発光ダイオ
ードアレイ（30）を点灯させ、その光で超伝導膜（12）
を部分的に加熱し、超伝導状態を破壊する。FIG. 3 shows still another recording head (10) in which the superconducting state is destroyed by the output light of the emitting diode.
The same parts as those in FIG. 2 are denoted by the same reference numerals, but the features of this embodiment are that the light emitting diode array (30) arranged along the longitudinal direction of the permanent magnet (18) and the light output from this array are superconducting films. A self-occ lens array (31) pointing to (12) is provided, and a light emitting diode array (30) is turned on according to a recording pattern, and the light is used to superconducting film (12).
Is partially heated to destroy the superconducting state.
超伝導状態破壊手段として更に他の例は、第２図や第
３図において放射源（20）や発光ダイオードアレイ（3
0）の出力波長を赤外領域に設定することである。超伝
導体のクーパー対は赤外線照射により効率的に破壊され
て超伝導状態が常伝導状態に転移する。この方法は加熱
により超伝導状態を破壊するよりも応答性が大きく、従
つて高速記録に適する。Still another example of the means for destroying the superconducting state is the radiation source (20) and the light emitting diode array (3
0) is to set the output wavelength in the infrared region. The Cooper pair of the superconductor is efficiently destroyed by infrared irradiation, and the superconducting state is changed to the normal conducting state. This method is more responsive than heating to destroy the superconducting state, and is therefore suitable for high-speed recording.
更に、以上の各実施例では超伝導体膜として臨界温度
が80゜Ｋのものを用いたが、常温超伝導膜の使用が可能
になれば、液体窒素による冷却は不要となる。Furthermore, in each of the above examples, a superconductor film having a critical temperature of 80 ° K was used, but if a room temperature superconducting film can be used, cooling with liquid nitrogen becomes unnecessary.
（ト） 発明の効果 本発明によれば、従来の磁気記録ヘッドの如き磁界発
生用コイルが不要となり、構造が簡単にして、かつ製造
の容易な記録ヘッドを得ることができる。(G) Effect of the Invention According to the present invention, a magnetic field generating coil unlike the conventional magnetic recording head is unnecessary, and a recording head having a simple structure and easy to manufacture can be obtained.
第１図乃至第３図は本発明記録ヘッドの斜視図、第４図
は同記録ヘッドを用いた記録装置の側面図である。 （10）……記録ヘッド、（10a）……記録ヘッドの前
面、（11）……基板、（12）……超伝導膜、（13）……
絶縁膜、（14）……超伝導破壊手段としての発熱抵抗
膜、（17）……ダクト、（18）……永久磁石。1 to 3 are perspective views of a recording head of the present invention, and FIG. 4 is a side view of a recording apparatus using the recording head. (10) …… recording head, (10a) …… front of recording head, (11) …… substrate, (12) …… superconducting film, (13) ……
Insulating film, (14) ... heating resistance film as a means for destroying superconducting material, (17) ... duct, (18) ... permanent magnet.
Claims (1)
導膜、この膜に対し、一方の側から、その膜面にほゞ垂
直な磁界を付与する磁界付与手段、上記磁界の付与され
た上記超伝導膜の領域において、記録パターンに応じた
常伝導状態部分を作るべく上記超伝導膜に関連づけられ
た超伝導状態破壊手段を具備する記録ヘッド。1. A magnetically permeable substrate, a superconducting film deposited on the surface of the substrate, a magnetic field applying means for applying a magnetic field almost perpendicular to the film surface to the film from one side, A recording head comprising superconducting state destroying means associated with the superconducting film in order to form a normal conducting portion corresponding to a recording pattern in the applied region of the superconducting film.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62287703A JP2527577B2 (en) | 1987-11-13 | 1987-11-13 | Recording head |
| US07/267,861 US4935403A (en) | 1987-11-13 | 1988-11-07 | Recording head and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62287703A JP2527577B2 (en) | 1987-11-13 | 1987-11-13 | Recording head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01128208A JPH01128208A (en) | 1989-05-19 |
| JP2527577B2 true JP2527577B2 (en) | 1996-08-28 |
Family
ID=17720644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62287703A Expired - Lifetime JP2527577B2 (en) | 1987-11-13 | 1987-11-13 | Recording head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2527577B2 (en) |
-
1987
- 1987-11-13 JP JP62287703A patent/JP2527577B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01128208A (en) | 1989-05-19 |
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