JPS6174127A - Head device - Google Patents

Head device

Info

Publication number
JPS6174127A
JPS6174127A JP19583484A JP19583484A JPS6174127A JP S6174127 A JPS6174127 A JP S6174127A JP 19583484 A JP19583484 A JP 19583484A JP 19583484 A JP19583484 A JP 19583484A JP S6174127 A JPS6174127 A JP S6174127A
Authority
JP
Japan
Prior art keywords
head
recording
magnetic
azimuth angle
thickness
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
Application number
JP19583484A
Other languages
Japanese (ja)
Inventor
Katsuhide Hasegawa
勝英 長谷川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP19583484A priority Critical patent/JPS6174127A/en
Publication of JPS6174127A publication Critical patent/JPS6174127A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/56Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53Disposition or mounting of heads on rotating support

Abstract

PURPOSE:To adjust an azimuth angle with high accuracy through a simple method by using two shims having prescribed length in fixing a magnetic head to a rotary drum. CONSTITUTION:A head chip 5b having a magnetic gap 5c is fitted to a head base 5a which is long horizontally. The base 5a is fixed to two screws 15a, 15b to a rotary drum 4 at an interval of l. then other shims 16a, 16b having two kinds of thickness ta, tb are used for azimuth angle adjustment. The thickness ta is calculated by ta=DELTAh-1/2l.tantheta and the thickness tb is also calculated similarly. since the shims 16a, 16b are used, the azimuth angle is adjusted simply at low cost and with high accuracy.

Description

【発明の詳細な説明】 [技術分野] 本発明はヘッド装置に係り、さらに詳細には磁気ヘッド
装置など、記録媒体に対して記録再生ヘッドを介して情
報の記録再生を行なうヘッド装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a head device, and more particularly to a head device such as a magnetic head device that records and reproduces information on a recording medium via a recording and reproducing head.

[従来技術] 従来VTR装置などにおいては、磁気テープ上に傾斜し
た複数本の記録トラックを形成、あるいはこのトラック
上の情報を再生するためにヘッド支持体としての回転ド
ラムの円周上に磁気ヘッドを取り付けたヘッド装置が知
られている。
[Prior Art] In conventional VTR devices, a plurality of inclined recording tracks are formed on a magnetic tape, or a magnetic head is placed on the circumference of a rotating drum serving as a head support in order to reproduce information on these tracks. A head device is known that is equipped with a.

従来、この種の装置においては、磁気ヘッドのアジマス
精度は機械的な加工精度により一定の誤差内に収まるよ
うに構成されていた。第1図、第2図(A)、CB)に
従来のヘッド装置の構造を示す。
Conventionally, in this type of device, the azimuth accuracy of the magnetic head has been configured to be within a certain error due to mechanical processing accuracy. Figures 1 and 2 (A) and CB) show the structure of a conventional head device.

図において符号1で示されるものは固定ドラムで、この
固定ドラム1と同軸に回転軸2上に回転ドラム4が取り
付けられている。回転軸2は軸受6.7により支持され
、固定ドラム1に対して回転自在となっている。固定ド
ラム1の下部にはモータ11が取り付けられており、回
転ドラム4はこのモータ11の駆動により回転される。
In the figure, the reference numeral 1 indicates a fixed drum, and a rotary drum 4 is mounted on a rotary shaft 2 coaxially with the fixed drum 1. The rotating shaft 2 is supported by bearings 6.7 and is rotatable relative to the fixed drum 1. A motor 11 is attached to the lower part of the fixed drum 1, and the rotating drum 4 is rotated by the drive of this motor 11.

回転ドラム4下面の円周上には磁気へラド5.5が固定
されており、これらの磁気ヘッド5により不図示の磁気
テープに対して情報の記録再生が行なわれる。磁気へラ
ド5に対する信号の入出力はロータリートランス9.1
0を介して行なわれる。
A magnetic head 5.5 is fixed on the circumference of the lower surface of the rotating drum 4, and these magnetic heads 5 record and reproduce information on and from a magnetic tape (not shown). The input and output of signals to the magnetic herad 5 is by rotary transformer 9.1.
This is done via 0.

磁気ヘッド5部分の構造を第2図(A)、(B)にそれ
ぞれ断面図、下面図として詳細に示す。各図に示すよう
に、磁気へラド5は磁性体にコイルを巻装して成るヘッ
ドチ・ンプ5bと、このヘッドチップ5bが接着固定さ
れたヘッドベース5aから構成されている。ヘッドチッ
プ5bの先端には磁電ないし電磁変換を行なうために記
録再生部としてのギャップ5Cが形成されている。
The structure of the magnetic head 5 portion is shown in detail in FIGS. 2(A) and 2(B) as a sectional view and a bottom view, respectively. As shown in each figure, the magnetic helad 5 is composed of a head chip 5b formed by winding a coil around a magnetic material, and a head base 5a to which the head chip 5b is adhesively fixed. A gap 5C serving as a recording/reproducing section is formed at the tip of the head chip 5b to perform magnetoelectric or electromagnetic conversion.

ヘッドベース5aはビス15によって回転トラム4に固
定されている。第2図(B)に示されるように、ビス1
5の取り付は位置は通常、ギャップ5Cおよびドラムの
回転中心を通る直線Y−Y′上に設定される。ヘッドベ
ース5aと回転ドラム4の間にはヘッド高調整用のシム
16が挿入、固定されており、さらにヘッドベースの外
周側に対応した回転ドラム4には浅い円形の凹部が形成
され、この凹部内にはビス17がねじ込まれており、こ
のビス17の突出量を回転ドラム4上方からドライバー
などを用いて回転させることによりヘッド高の微調整を
行なうようになっている。
The head base 5a is fixed to the rotating tram 4 with screws 15. As shown in Figure 2 (B), screw 1
5 is normally installed on a straight line YY' passing through the gap 5C and the center of rotation of the drum. A shim 16 for head height adjustment is inserted and fixed between the head base 5a and the rotating drum 4, and a shallow circular recess is formed in the rotating drum 4 corresponding to the outer circumference of the head base. A screw 17 is screwed into the inside, and the head height can be finely adjusted by rotating the protruding amount of the screw 17 from above the rotary drum 4 using a screwdriver or the like.

以上のような従来構成においては、磁気ヘッド5の円周
方向、および半径方向に関する位置出しは冶具などによ
りあらかじめ調整した後、ビス15を締め付けることに
より行ない、固定ドラム1下面からのヘッド高Hについ
てはシム16とビス17により調整するが、ギャップ5
Cのアジマスに関してはなんら調整機構が設けられてい
ない。すなわち、アジマス角は固定ドラム1、および磁
気ヘッド5の各構成部材の工作精度により定められてい
た。
In the conventional configuration as described above, the positioning of the magnetic head 5 in the circumferential direction and the radial direction is performed by tightening the screw 15 after adjusting the position in advance using a jig, etc., and the head height H from the bottom surface of the fixed drum 1 is adjusted in advance. is adjusted with shim 16 and screw 17, but gap 5
No adjustment mechanism is provided for the azimuth of C. That is, the azimuth angle is determined by the machining accuracy of each component of the fixed drum 1 and the magnetic head 5.

アジマス誤差により記録再生時に出力の減少、すなわち
アジマス損失が生じることは周知であるが、特に最近の
高密度記録においてはアジマス損失は大きな問題となっ
てくる。
It is well known that an azimuth error causes a decrease in output during recording and reproduction, that is, an azimuth loss, but the azimuth loss has become a big problem, especially in recent high-density recording.

近年では記録媒体の改良や磁気ヘッドの特性改善などに
より記録密度が著しく向上しており、高記録波長、トラ
ック幅には次式に示すような関係がある。
In recent years, recording density has increased significantly due to improvements in recording media and characteristics of magnetic heads, and there is a relationship between high recording wavelength and track width as shown in the following equation.

入 ただしtωはトラック幅、入は記録波長、θはアジマス
角を示すものである。
where tω is the track width, t is the recording wavelength, and θ is the azimuth angle.

上式に示されるように、トラック幅が広い程、また記録
波長が短いほどアジマス損失は大きくなる。一方、トラ
ック幅を小さくすることはアジマス損失には有利である
が、アジマス角の測定、あるいは加工精度がいちじるし
く悪化する難点かある。
As shown in the above equation, the wider the track width and the shorter the recording wavelength, the greater the azimuth loss. On the other hand, while reducing the track width is advantageous for reducing azimuth loss, it also has the disadvantage of significantly deteriorating the accuracy of azimuth angle measurement or processing.

たとえばトラック幅30g、m、記録波長0.5ルーと
すると、20′のアジマス誤差に対して約1.8dBの
アジマス損失があるが、20′はトラック幅30 gm
に対してわずか0.1フルm程度に相当し、加工上、あ
るいは測定上も非常に困難をともなう。これに対して前
記従来例のような構成では調整が不可能であるので、記
録媒体の互換性を完全に保障することは非常に困難であ
る。
For example, if the track width is 30 g, m and the recording wavelength is 0.5 lu, there is an azimuth loss of about 1.8 dB for an azimuth error of 20', but 20' has a track width of 30 gm.
This corresponds to only about 0.1 full m, which is extremely difficult in terms of processing and measurement. On the other hand, since adjustment is not possible with the configuration of the conventional example, it is very difficult to completely guarantee compatibility of recording media.

[目 的] 本発明は以上の点に鑑みてなされたもので、簡単で安価
な構造により精度よくアジマス角を設定可能なヘッド装
置を提供することを目的とする。
[Objective] The present invention has been made in view of the above points, and it is an object of the present invention to provide a head device that can accurately set the azimuth angle with a simple and inexpensive structure.

[実施例] 以下、図面に示す実施例に基づいて本発明の詳細な説明
する。ただし以下では、従来例と同様VTR装置におけ
る実施例を示し、前記従来例と同一ないし相当する部材
に関しては同一符号を付し、その説明は省略する。
[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings. However, in the following, an embodiment in a VTR device will be shown similar to the conventional example, and the same reference numerals will be given to the same or corresponding members as in the conventional example, and the explanation thereof will be omitted.

第3図は本発明の一実施例を示すもので、磁気へ・ラド
5の取り付は部を回転ドラム4の下面から示したもので
ある。同図に示すように、本発明においてはギャップ5
Cを有するヘントチツブ5bは左右に長いヘッドベース
5a上に取り付けられている。ヘッドベース5aはギャ
ップ5cとドラムの回転中心を通る直線Y−Y’に対し
て線対称な形状とされ、さらに同様に対称な位置、すな
わち1直線Y−Y’ に直角な直線x−x’上で距離l
だけ離れた位置において、回転ドラム4に対して2つの
ビス15a、15bにより固定されている。これらのビ
ス15a、15bによる取り付は位置において、ヘッド
ベース5aと回転ドラム4の間にはそれぞれ別個のシム
16a、16bが挿入、固定されている。また、ヘッド
高調整用のビス17は直線Y−Y’の位置に設けられて
いる。
FIG. 3 shows an embodiment of the present invention, in which the attachment of the magnetic head 5 is shown from the bottom of the rotating drum 4. As shown in the figure, in the present invention, the gap 5
The hent tip 5b having C is mounted on a head base 5a which is long from side to side. The head base 5a has a shape that is line symmetrical with respect to a straight line Y-Y' passing through the gap 5c and the center of rotation of the drum, and is further symmetrical with respect to a straight line distance l above
It is fixed to the rotating drum 4 by two screws 15a and 15b at a position separated by the same distance. When attaching with these screws 15a and 15b, separate shims 16a and 16b are inserted and fixed between the head base 5a and the rotating drum 4, respectively. Further, a screw 17 for adjusting the head height is provided at a position along the straight line YY'.

次に第4図を参照して磁気ヘッドの取り付け、調整作業
につき説明する。
Next, the installation and adjustment work of the magnetic head will be explained with reference to FIG.

磁気へラド5を仮止めした後、まず、磁気へラド5のア
ジマス誤差Δθと高さ誤差Δhを測定する。すなわち、
回転ドラム40基準面P−P’ に対して高さhとアジ
マス角θを測定し、標準値との差Δh、Δθを求め、こ
れより2枚のシム16a、16b(7)厚さta、tb
を決定する。
After temporarily fixing the magnetic heald 5, first, the azimuth error Δθ and height error Δh of the magnetic heald 5 are measured. That is,
The height h and azimuth angle θ are measured with respect to the reference plane PP' of the rotating drum 40, and the differences Δh and Δθ from the standard values are determined. From these, the thickness ta of the two shims 16a and 16b (7), tb
Determine.

ta、tbは次の式から算出できる。ta and tb can be calculated from the following formula.

ta=Δh−−j2etanθ tb=Δh−yj2”tanθ このようにして求めた厚さのシム16a。ta=Δh−−j2etanθ tb=Δh−yj2”tanθ The shim 16a has the thickness determined in this way.

16bを間にはさみ込んで磁気ヘッドを回転ドラム4の
円周方向、および半径方向に位置出しして取り付け、必
要があればビス17によりヘッド高の調整を行なえばよ
い。
16b between them, the magnetic head is positioned and attached to the rotating drum 4 in the circumferential direction and radial direction, and the head height can be adjusted using the screws 17 if necessary.

このような実施例によれば、円周方向、半径方向の調整
と、高さの調整は独立して行なえ、またアジマス角は高
さの調整を行なっても影響を受けないので調整作業はき
わめて簡、単である。
According to this embodiment, adjustment in the circumferential direction, radial direction, and height adjustment can be performed independently, and the azimuth angle is not affected by the height adjustment, so the adjustment work is extremely simple. Easy, simple.

むろん上記の方法においては各シムの厚みが正の値にな
らなければならないので、見込まれ、る最大アジマス誤
差ΔθmaXに対してΔhの最小値Δh winが Δh lll1n≧1 / 2 t a nΔθ厘a!
となるように回転ドラム4の取り付は面の高さを設定し
ておくのはもちろんである。
Of course, in the above method, the thickness of each shim must be a positive value, so for the expected maximum azimuth error ΔθmaX, the minimum value Δh win of Δh is Δh lll1n≧1/2 t a nΔθ厘a !
Of course, the height of the mounting surface of the rotating drum 4 must be set so that the rotation drum 4 is mounted.

また、ビス17の先端部はlに対して十分小さくしてお
く必要がある。取り付は後、ヘッドベースがビス17に
対して押し付けられることによりアジマス角が一定に保
持されるので、ビス17が大きな直径を有する場合には
アジマス角に影響を与えてしまうからである。また、ビ
ス17をなるべく直線x−x’ より即した位置に設定
することにより3点支持に近づくのでヘッドをより安定
に保持できる。
Further, the tip of the screw 17 must be made sufficiently small relative to l. This is because after installation, the azimuth angle is kept constant by pressing the head base against the screw 17, so if the screw 17 has a large diameter, the azimuth angle will be affected. Furthermore, by setting the screws 17 as close to the straight line xx' as possible, three-point support is approached, so the head can be held more stably.

以上の実施例によれば、簡単、安価な構成により2枚の
シムの厚さを選定するだけで、アジマス角を修正するこ
とができ、しかもヘッド高など他の調整と独立して位置
調整が行なえるので、作業効率がよく、加工、調整コス
トを低減できるという優れた効果がある。したがって、
本発明によるヘッド装置は7ジマス損失管理の面から高
密度記録、再生を行なう記録再生装置に好ましく用いる
ことができる。
According to the above embodiment, the azimuth angle can be corrected by simply selecting the thickness of two shims with a simple and inexpensive configuration, and the position can be adjusted independently of other adjustments such as head height. This has the advantage of improving work efficiency and reducing processing and adjustment costs. therefore,
The head device according to the present invention can be preferably used in a recording and reproducing apparatus that performs high-density recording and reproducing from the viewpoint of 7-frame loss management.

以上ではVTR装置などにおける回転ヘッド装置に関す
る実施例を例示したが、本発明が他のヘッド装置に実施
できるのはもちろんである。その場合、適用される装置
に応じて種々の変更が可能なのはもちろんで、たとえば
ヘッドベースを省略し、ヘッドチップ自体を対称的な形
状とし、これを直接支持体に固定するような構成も考え
られる。
Although the embodiments related to a rotary head device in a VTR device and the like have been described above, it goes without saying that the present invention can be implemented in other head devices. In that case, it goes without saying that various changes can be made depending on the device to be applied; for example, it is possible to omit the head base, give the head chip itself a symmetrical shape, and fix it directly to the support. .

[効 果] 以上の説明から明らかなように、本発明によれば、記録
再生部に関して線対称形状を有する記録再生ヘッド部と
、この記録再生ヘッド部を記録再生位置に対して線対称
な位置においてヘッド支持体に固定する手段と、前記固
定位置において前記記録再生ヘッドと前記ヘッド支持体
との間に挿入される所定の厚みを有するシムを設けた構
成を採用しているため、簡単で安価な構成により記録再
生ヘッドの位置を容易かつ正確に調整可能な優れたヘッ
ド装置を提供することができる。
[Effect] As is clear from the above description, according to the present invention, the recording/reproducing head section has a line-symmetrical shape with respect to the recording/reproducing section, and the recording/reproducing head section is positioned at a line-symmetrical position with respect to the recording/reproducing position. The structure is simple and inexpensive because it employs a structure that includes means for fixing to the head support at the fixing position, and a shim having a predetermined thickness that is inserted between the recording/reproducing head and the head support at the fixing position. With this configuration, it is possible to provide an excellent head device in which the position of the recording/reproducing head can be easily and accurately adjusted.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来のヘッド装置の構造を示す断面図、第2図
(A)、(B)は第1図の一部をそれぞれ拡大して示す
断面図および下面図、第3図は本発明の一実施例を示す
下面図、第4図は本発明におけるヘッド位置調整を示し
た説FIA図である。 4・・・回転ドラム   5・・・磁気へラド5a・・
・ヘッドベース 5b・・・ヘッドチップ5C・・・ギ
ャップ 15a、15b、17−・・ビス 16a、16b・・・シム
FIG. 1 is a cross-sectional view showing the structure of a conventional head device, FIGS. 2(A) and (B) are a cross-sectional view and a bottom view showing an enlarged part of FIG. 1, and FIG. 3 is a cross-sectional view showing the structure of a conventional head device. FIG. 4 is a bottom view showing one embodiment of the present invention, and FIG. 4 is a schematic FIA diagram showing head position adjustment in the present invention. 4...Rotating drum 5...Magnetic helad 5a...
・Head base 5b... Head chip 5C... Gaps 15a, 15b, 17-... Screws 16a, 16b... Shim

Claims (1)

【特許請求の範囲】[Claims] 記録再生部に関して線対称形状を有する記録再生ヘッド
部と、この記録再生ヘッド部を記録再生部に対して線対
称な位置においてヘッド支持体に固定する手段と、前記
固定位置において前記記録再生ヘッドと前記ヘッド支持
体との間に挿入される所定の厚みを有するシムを設けた
ことを特徴とするヘッド装置。
a recording/reproducing head section having a line-symmetrical shape with respect to the recording/reproducing section; means for fixing the recording/reproducing head section to a head support at a position symmetrical to the recording/reproducing section; A head device characterized in that a shim having a predetermined thickness is inserted between the head support and the head support.
JP19583484A 1984-09-20 1984-09-20 Head device Pending JPS6174127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19583484A JPS6174127A (en) 1984-09-20 1984-09-20 Head device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19583484A JPS6174127A (en) 1984-09-20 1984-09-20 Head device

Publications (1)

Publication Number Publication Date
JPS6174127A true JPS6174127A (en) 1986-04-16

Family

ID=16347781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19583484A Pending JPS6174127A (en) 1984-09-20 1984-09-20 Head device

Country Status (1)

Country Link
JP (1) JPS6174127A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5251084A (en) * 1990-06-05 1993-10-05 Sony Corporation Transducer head base for multiple size drums
US6115220A (en) * 1997-10-08 2000-09-05 Magnecomp Corp. Load beam having pitch adjustability

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5251084A (en) * 1990-06-05 1993-10-05 Sony Corporation Transducer head base for multiple size drums
US6115220A (en) * 1997-10-08 2000-09-05 Magnecomp Corp. Load beam having pitch adjustability

Similar Documents

Publication Publication Date Title
US4097908A (en) Method for inspecting the skew of a magnetic head, for selectively locating a lead screw and an apparatus therefor
JPS6174127A (en) Head device
JPS6138526B2 (en)
JPS6317058Y2 (en)
JP2696796B2 (en) Rotary magnetic head device for dynamic tracking
JPH0359502B2 (en)
JPS6323785Y2 (en)
JPS632993Y2 (en)
JP2770519B2 (en) Magnetic head
JP3033296B2 (en) Magnetic recording / reproducing device
JPH0235363B2 (en) FUROTSUPYOJIKIHETSUDOARAIMENTOCHOSEISOCHI
JPH0351789Y2 (en)
JPH0727623B2 (en) Magnetic recording / reproducing device
JPH0119227Y2 (en)
JPS60120585U (en) magnetic recording and reproducing device
JP3109333B2 (en) Position adjustment method for double-sided magnetic head
JPS60177485A (en) Position information forming
JPH02236807A (en) Production of magnetic head
JPH0414605A (en) Drum unit
JPH10124831A (en) Magnetic head device
JPH0213369B2 (en)
JPH0798827A (en) Method for arranging magnetic head of magnetic recording/reproducing device
JPH0241805B2 (en)
JP2002298317A (en) Rotary head device
JPS60164916A (en) Head device