JPH0423324B2 - - Google Patents
Info
- Publication number
- JPH0423324B2 JPH0423324B2 JP59206521A JP20652184A JPH0423324B2 JP H0423324 B2 JPH0423324 B2 JP H0423324B2 JP 59206521 A JP59206521 A JP 59206521A JP 20652184 A JP20652184 A JP 20652184A JP H0423324 B2 JPH0423324 B2 JP H0423324B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- chip
- magnetic recording
- head chip
- magnetic
- 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
Links
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims description 7
- 230000013011 mating Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 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
- G11B5/48—Disposition 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
- G11B5/52—Disposition 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
- G11B5/53—Disposition or mounting of heads on rotating support
Landscapes
- Magnetic Heads (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は単結晶フエライト製磁気ヘツドチツプ
を回転シリンダに搭載してなる回転ヘツドを用い
るヘリカルスキヤン方式の磁気記録再生装置、特
に再生時に発生する摺動ノイズの低減化が図られ
た磁気記録再生装置に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a helical scan type magnetic recording/reproducing apparatus using a rotating head in which a magnetic head chip made of single crystal ferrite is mounted on a rotating cylinder, and in particular to The present invention relates to a magnetic recording and reproducing device that reduces dynamic noise.
（従来技術）
周知のように、ヘリカルスキヤン方式のビデオ
テープレコーダ等の磁気記録再生装置（本明細書
においては再生のみを行なう装置も含むものとす
る）には、磁気ヘツドチツプを回転シリンダに搭
載してなる回転ヘツドが用いられている。最近の
この種の回転ヘツドにあつては、上記磁気ヘツド
チツプは電磁変換特性上優れたMn−Zn系単結晶
フエライトから形成されるのが一般的になつてい
る。(Prior Art) As is well known, magnetic recording/reproducing devices such as helical scan video tape recorders (in this specification, devices that only perform playback are also included) include a magnetic head chip mounted on a rotating cylinder. A rotating head is used. In recent rotary heads of this type, the magnetic head chip is generally formed from Mn--Zn single crystal ferrite which has excellent electromagnetic conversion characteristics.
しかしながら上記単結晶フエライト製磁気ヘツ
ドチツプを搭載した回転ヘツドを用いる磁気記録
再生装置においては、再生時に摺動ノイズが発生
しやすいという不具合が認められている。この摺
動ノイズの発生原因は種々研究がなされているに
もかかわらず充分解明されてはいないが、磁気テ
ープと回転ヘツドとの摺動点で発生する振動およ
び熱が大きく関与していると考えられている。 However, in a magnetic recording/reproducing apparatus using a rotating head equipped with the above-mentioned single-crystal ferrite magnetic head chip, it has been recognized that there is a problem in that sliding noise is likely to occur during reproduction. The cause of this sliding noise has not been fully elucidated despite various studies, but it is thought that vibration and heat generated at the sliding point between the magnetic tape and the rotating head are largely responsible. It is being
（発明の目的）
本発明は上記のような事情に鑑みてなされたも
のであり、単結晶フエライト製磁気ヘツドチツプ
を用いる回転ヘツド型ヘリカルスキヤン方式の磁
気記録再生装置において、上記摺動ノイズの発生
を低減することを目的とするものである。(Object of the Invention) The present invention has been made in view of the above-mentioned circumstances, and is intended to reduce the occurrence of the above-mentioned sliding noise in a rotating head type helical scan type magnetic recording/reproducing device using a magnetic head chip made of single-crystal ferrite. The purpose is to reduce
（発明の構成）
本発明の磁気記録再生装置は、上記のような回
転ヘツド型ヘリカルスキヤン方式の磁気記録再生
装置において、ヘツドチツプのギヤツプを形成す
る合わせ面下端（コイル巻回用の孔の少なくとも
テープ摺動面側の一部）に、剛性接着剤を被着し
たことを特徴とするものである。この剛性接着剤
は剛性が大きく弾性領域をほとんど有しない素材
よりなりこの弾性変形を起こさない性質のため振
動を抑制する効果があり、上記のようにヘツドチ
ツプの一部に該剛性接着剤を被着すると、磁気ヘ
ツドチツプの振動が抑制されて摺動ノイズが低減
され、しかもチツプの剛性が向上する。(Structure of the Invention) The magnetic recording/reproducing device of the present invention is a rotating head type helical scan type magnetic recording/reproducing device as described above. It is characterized in that a rigid adhesive is applied to a part of the sliding surface side. This rigid adhesive is made of a material that is highly rigid and has almost no elastic area, and because it does not cause elastic deformation, it has the effect of suppressing vibrations.As mentioned above, this rigid adhesive is applied to a part of the head chip. This suppresses the vibration of the magnetic head chip, reduces sliding noise, and improves the rigidity of the chip.
（実施例）
第１図は本発明の一実施例によるヘリカルスキ
ヤン方式の磁気記録再生記録装置の回転ヘツドを
示すものであり、また第２図はこの回転ヘツドに
取付けられた磁気ヘツドチツプを拡大して示すも
のである。回転ヘツド１０は円筒状の回転シリン
ダ１１に、一例として２個の磁気ヘツドチツプ１
２，１２が搭載されてなる。これら磁気ヘツドチ
ツプ１２，１２は単結晶フエライトから形成さ
れ、ほぼ中央の巻線窓１２ａを介してコイル１５
が巻回されてそれぞれチツプ台１３，１３に固定
され、これらのチツプ台１３，１３がビス１４，
１４によつて回転シリンダ１１に取付けられてい
る。前記磁気ヘツドチツプ１２に形成された前記
コイル１５巻回用の巻線窓１２ａのテープ摺動面
１２ｂに近い一端には剛性接着剤１６が充填被着
されている。なお、ここでは、剛性接着剤として
石膏を用いた。この剛性接着剤１６はチツプ１２
の製造後充填被着される。標準的なVHS型ビデ
オテープレコーダ（松下電器産業(株)製NV−
3500N）の磁気ヘツドチツプ１２に、上記剛性接
着剤１６を被着し、該ビデオテープレコーダに良
く消磁した標準タイプのビデオテープ（富士写真
フイルム(株)製Ｔ−120E）を装着して再生モード
に設定し、再生プリアンプの出力信号の摺動ノイ
ズを測定した。その結果を第３図において実線で
示す。また比例として、上記ビデオテープレコー
ダの磁気ヘツド１２に剛性接着剤１６を被着しな
い通常のチツプを用いた場合について同様の測定
を行つた結果を第３図において破線で示す。（な
おこの第３図に示す測定結果は、アンプのノイズ
を差し引いたものである。）
上記第３図に明確に示されるように、剛性接着
剤１６を被着した柔気ヘツドチツプ１２を用いた
本発明によるビデオテープレコーダにおいては、
比例に比べ摺動ノイズが１〜2dB程度低減されて
いる。(Embodiment) Fig. 1 shows a rotating head of a helical scan type magnetic recording/reproducing device according to an embodiment of the present invention, and Fig. 2 shows an enlarged view of a magnetic head chip attached to this rotating head. This is what is shown. The rotating head 10 includes, for example, two magnetic head chips 1 in a cylindrical rotating cylinder 11.
2 and 12 are installed. These magnetic head chips 12, 12 are made of single-crystal ferrite, and the coil 15 is connected through a winding window 12a located approximately in the center.
are wound and fixed to the chip stands 13, 13, respectively, and these chip stands 13, 13 are connected to the screws 14,
14 to the rotating cylinder 11. A rigid adhesive 16 is filled and adhered to one end of the winding window 12a formed on the magnetic head chip 12 for winding the coil 15, which is close to the tape sliding surface 12b. Note that here, gypsum was used as the rigid adhesive. This rigid adhesive 16 is attached to the chip 12.
After manufacturing, filling is applied. Standard VHS video tape recorder (NV- manufactured by Matsushita Electric Industrial Co., Ltd.)
The above-mentioned rigid adhesive 16 was applied to the magnetic head chip 12 (3500N), and a well-demagnetized standard type video tape (T-120E manufactured by Fuji Photo Film Co., Ltd.) was attached to the video tape recorder and set to playback mode. settings, and measured the sliding noise of the output signal of the playback preamplifier. The results are shown by the solid line in FIG. Also, as a proportional measure, the results of similar measurements in the case where an ordinary chip without the rigid adhesive 16 applied to the magnetic head 12 of the videotape recorder were used are shown by broken lines in FIG. (Note that the measurement results shown in FIG. 3 are obtained by subtracting the noise of the amplifier.) As clearly shown in FIG. In the video tape recorder according to the present invention,
Sliding noise is reduced by about 1 to 2 dB compared to proportional type.
（発明の効果）
以上詳細に説明した通り、本発明によれば、単
結晶フエライト製磁気ヘツドチツプを備えた磁気
記録再生装置において摺動ノイズが装置を複雑化
することなく容易に、確実に低減されるようにな
る。(Effects of the Invention) As described in detail above, according to the present invention, sliding noise can be easily and reliably reduced in a magnetic recording/reproducing device equipped with a single-crystal ferrite magnetic head chip without complicating the device. Become so.
第１図は本発明の１実施例を示す斜視図、第２
図は上記実施例の一部を拡大して示す平面図、第
３図は上記実施例の摺動ノイズの測定結果を、従
来装置の摺動ノイズ測定結果と比較して示すグラ
フである。
１０……回転ヘツド、１１……回転シリンダ、
１２……磁気ヘツドチツプ、１３……チツプ台、
１５……コイル、１６……剛性接着剤。
Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is a perspective view showing one embodiment of the present invention;
FIG. 3 is a plan view showing an enlarged part of the above embodiment, and FIG. 3 is a graph showing a comparison between the sliding noise measurement results of the above embodiment and the conventional device. 10... Rotating head, 11... Rotating cylinder,
12... Magnetic head chip, 13... Chip stand,
15...Coil, 16...Rigid adhesive.
Claims (1)
シリンダに搭載してなる回転ヘツドを備えたヘリ
カルスキヤン方式の磁気記録再生装置において、
前記磁気ヘツドチツプの合わせ面下端に剛性接着
剤を被覆したことを特徴とする磁気記録再生装
置。1. In a helical scan type magnetic recording and reproducing device equipped with a rotating head in which a magnetic head chip made of single crystal ferrite is mounted on a rotating cylinder,
A magnetic recording/reproducing device characterized in that a lower end of the mating surface of the magnetic head chip is coated with a rigid adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20652184A JPS6185608A (en) | 1984-10-02 | 1984-10-02 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20652184A JPS6185608A (en) | 1984-10-02 | 1984-10-02 | Magnetic recording and reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6185608A JPS6185608A (en) | 1986-05-01 |
| JPH0423324B2 true JPH0423324B2 (en) | 1992-04-22 |
Family
ID=16524738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20652184A Granted JPS6185608A (en) | 1984-10-02 | 1984-10-02 | Magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6185608A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT388822B (en) * | 1987-07-30 | 1989-09-11 | Philips Nv | MAGNETIC HEAD |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5371818A (en) * | 1976-12-08 | 1978-06-26 | Hitachi Ltd | Head chip and its production |
-
1984
- 1984-10-02 JP JP20652184A patent/JPS6185608A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5371818A (en) * | 1976-12-08 | 1978-06-26 | Hitachi Ltd | Head chip and its production |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6185608A (en) | 1986-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |