JPH0561694B2 - - Google Patents
Info
- Publication number
- JPH0561694B2 JPH0561694B2 JP57071029A JP7102982A JPH0561694B2 JP H0561694 B2 JPH0561694 B2 JP H0561694B2 JP 57071029 A JP57071029 A JP 57071029A JP 7102982 A JP7102982 A JP 7102982A JP H0561694 B2 JPH0561694 B2 JP H0561694B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic sheet
- back plate
- sheet
- magnetic
- sliding material
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
- G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
-
- 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
- G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
- G11B5/82—Disk carriers
Description
【発明の詳細な説明】
本発明は磁気シートレコーダに使用して好適な
回転シートレコーダに関し、特に磁気シートの回
転を常に良好なものとし良好な記録・再生がなし
得るようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary sheet recorder suitable for use in a magnetic sheet recorder, and in particular to a rotary sheet recorder in which the rotation of the magnetic sheet is always good so that good recording and reproduction can be achieved.
従来、第１図の如きバツクプレート１の一部に
ヘツド突き出し切欠部１ａを有し、磁気ヘツド突
き出し切欠部１ａから磁気ヘツド２を突き出して
例えば直径280mm、0.02mm厚の円板状磁気シート
３に当接させてバツクプレート１上面の上方を磁
気シート３が回転摺動するようにして記録、再生
がなし得るようにした磁気シートレコーダが提案
されていた。 Conventionally, a part of a back plate 1 as shown in FIG. 1 has a head protruding notch 1a, and a magnetic head 2 is protruded from the magnetic head protruding notch 1a to form a disc-shaped magnetic sheet 3 having a diameter of 280 mm and a thickness of 0.02 mm, for example. A magnetic sheet recorder has been proposed in which a magnetic sheet 3 rotates and slides above the upper surface of a back plate 1 in contact with the magnetic sheet 3 to perform recording and reproduction.
この第１図において４は磁気シート駆動用モー
タを示し、この磁気シート駆動用モータ４の回転
軸４ａに磁気シート３を挾持するシートボス５及
びシートハブ６を設ける。この場合磁気シート３
の中心部３ａはシートハブ６とシートボス５によ
り挾まれて駆動モータ４の所定速度例えば1800r.
p.m.の回転により、駆動されてバツクプレート１
上に形成されるエアフイルムの上で回転をするよ
うになされている。また一方、磁気ヘツド２はヘ
ツド取付板２ａに固定され、このヘツド取付板２
ａはヘツド基台２ｂに取付られ、ヘツド送りモー
タ７により螺子部８が所定速度で所定方向に回転
しヘツド基台２ｂが磁気シート３の径方向に移動
し、磁気ヘツド２が磁気シート３の渦巻き状のト
ラツクパターンの所望の位置に当接する様になさ
れ所望の記録再生がなし得るものである。尚、９
はヘツド基台２ｂの移動案内棒である。 In FIG. 1, reference numeral 4 denotes a magnetic sheet driving motor, and a rotating shaft 4a of the magnetic sheet driving motor 4 is provided with a seat boss 5 and a seat hub 6 for holding the magnetic sheet 3 therebetween. In this case magnetic sheet 3
The center portion 3a of the seat hub 6 and the seat boss 5 are sandwiched between the seat hub 6 and the seat boss 5, and the drive motor 4 is driven at a predetermined speed of, for example, 1800r.
Back plate 1 is driven by the rotation of pm.
It is designed to rotate on an air film formed above. On the other hand, the magnetic head 2 is fixed to a head mounting plate 2a.
a is attached to the head base 2b, and the screw portion 8 is rotated in a predetermined direction at a predetermined speed by the head feed motor 7, the head base 2b is moved in the radial direction of the magnetic sheet 3, and the magnetic head 2 is moved in the radial direction of the magnetic sheet 3. By making contact with a desired position of the spiral track pattern, desired recording and reproduction can be achieved. Furthermore, 9
is a moving guide rod of the head base 2b.
かかる従来例では磁気シート３の直径が例えば
280mmと大きく且つ可撓性を有するので磁気シー
ト３の静止時には磁気シート３がバツクプレート
１と面接触していて、かかる磁気シート３をバツ
クプレート１上で回転起動させるときに、磁気シ
ート３がバツクプレート１に張り付いている場合
があり、かかる場合には磁気シート３が起動しに
くくシート駆動モータ７の電力損等が大きく問題
であつた。例えば温度、湿度等の物理的条件が変
わると例えば露結を生じて磁気シート３はバツク
プレート１に張り付いてしまつた。また、磁気シ
ート回転中にあつても露結等により負荷変動が生
じることもあり、かかる場合はサーボ（図示せ
ず）のかかりが悪くなり、磁気シート３の回転が
不安定になつてしまい、従来の磁気シートレコー
ダでは磁気シート３の良好な回転を常時得られ
ず、良好な記録再生がなし得ない欠点があつた。 In such a conventional example, the diameter of the magnetic sheet 3 is, for example,
Since the magnetic sheet 3 is large at 280 mm and has flexibility, when the magnetic sheet 3 is at rest, it is in surface contact with the back plate 1, and when the magnetic sheet 3 is started to rotate on the back plate 1, the magnetic sheet 3 is in surface contact with the back plate 1. In some cases, the magnetic sheet 3 is stuck to the back plate 1, and in such a case, it is difficult to start the magnetic sheet 3, and power loss of the sheet drive motor 7 is a major problem. For example, when physical conditions such as temperature and humidity change, dew condensation occurs and the magnetic sheet 3 sticks to the back plate 1. In addition, even when the magnetic sheet is rotating, load fluctuations may occur due to dew condensation, etc. In such a case, the servo (not shown) will not work properly, and the rotation of the magnetic sheet 3 will become unstable. Conventional magnetic sheet recorders have the drawback that good rotation of the magnetic sheet 3 cannot be obtained at all times, and good recording and reproduction cannot be achieved.
本発明はかかる点に鑑み、磁気シートの回転を
常に良好なものとした回転シートレコーダを提供
せんとするものである。 In view of this problem, the present invention aims to provide a rotary sheet recorder in which the rotation of the magnetic sheet is always good.
以下第２図乃至第５図を参照して本発明の一実
施例につき説明しよう。これら第２図乃至第４図
において第１図に対応する部分には同一符号を付
しその詳細説明は省略する。 An embodiment of the present invention will be described below with reference to FIGS. 2 to 5. In these FIGS. 2 to 4, parts corresponding to those in FIG. 1 are given the same reference numerals, and detailed explanation thereof will be omitted.
本例に於いて磁気シートレコーダのバツクプレ
ート１を第２図に示す様に高分子複合材料による
摺動材１ｂとベース材１ｃを重ねた２層構造のも
のとして一体に成型する。この摺動材１ｂの組成
は体積の割合として例えばレジンを40％、直径
30μ以下の球状のガラスビーズ１ｄを40％、グラ
フアイトを若干％とし、ベース材の組成は体積の
割合として例えばレジンを30.3％、ガラスビーズ
１ｄを48.8％、グラフアイトを若干％とする。う
ち摺動材１ｂの磁気シート摺動面を研磨あるいは
熱処理してガラスビーズ１ｄを第３図の如く他の
組成物より0.1〜10μm程度突き出す様にする。ま
た一方、ベース材１ｃの厚さを摺動材１ｂの厚さ
の例えば略３倍とする。 In this example, the back plate 1 of the magnetic sheet recorder is integrally molded as a two-layer structure consisting of a sliding material 1b and a base material 1c made of a polymeric composite material, as shown in FIG. The composition of this sliding material 1b is, for example, 40% resin by volume, and the diameter
The composition of the base material is, for example, 30.3% resin, 48.8% glass beads 1d, and slightly % graphite in terms of volume proportions. The sliding surface of the magnetic sheet of the sliding material 1b is polished or heat treated so that the glass beads 1d protrude by about 0.1 to 10 μm from the other compositions as shown in FIG. On the other hand, the thickness of the base material 1c is, for example, approximately three times the thickness of the sliding material 1b.
本実施例はこのように構成されているので、磁
気シート３の静止時に磁気シート３の下面が突き
出したガラスビーズ１ｄに略点接触する如くな
り、シート駆動モータ４を起動した際もバツクプ
レート１と磁気シート３との張り付きによる支障
はなく、シート駆動モータ７を回転させ磁気シー
ト３を始動させようとすれば良好に磁気シート３
が回転していく。このことを確認するための実験
では、従来例で露結等によつて磁気シート３がバ
ツクプレート１に張りついているときは起動時の
トルクが約1000gr−cmまでいかなくては磁気シー
ト３が回転し始めないのに比べ、本実施例では磁
気シート３とバツクプレート１との間のエアーフ
イルム量が零のときは起動時のトルクが約670gr
−cmあれば磁気シート３が始動し、かかるエアー
フイルム厚が約0.2mmのときはかかるトルクが約
300gr−cmで始動し、かかるエアーフイルム厚が
約0.5mmのときはかかるトルクが約150gr−cmで始
動し、かかるエアーフイルム厚が1.0mmのときは
かかるトルクが125gr−cmで始動するという、第
５図の如き実験結果が得られた。 Since this embodiment is configured in this way, when the magnetic sheet 3 is stationary, the bottom surface of the magnetic sheet 3 comes into approximately point contact with the protruding glass beads 1d, and even when the sheet drive motor 4 is started, the back plate 1 There is no problem due to sticking between the magnetic sheet 3 and the magnetic sheet 3, and if you try to start the magnetic sheet 3 by rotating the sheet drive motor 7, the magnetic sheet 3 will move smoothly.
is rotating. In an experiment to confirm this, in a conventional example, when the magnetic sheet 3 was stuck to the back plate 1 due to dew condensation, etc., the torque at startup had to reach about 1000 gr-cm. In contrast, in this embodiment, when the amount of air film between the magnetic sheet 3 and the back plate 1 is zero, the torque at startup is approximately 670 gr.
- cm, the magnetic sheet 3 will start, and if the air film thickness is about 0.2 mm, the applied torque will be about
When the air film thickness is approximately 0.5 mm, the engine starts at a torque of approximately 150 gr-cm, and when the air film thickness is 1.0 mm, the engine starts at a torque of 125 gr-cm. Experimental results as shown in FIG. 5 were obtained.
以上述べた様に本発明に依れば、従来と異なり
バツクプレート１をガラスビーズを主な組成とす
る高分子複合材料を用い、且つ、ガラスビーズ
を、バツクプレートの他の組成物より0.1〜10μm
程度突き出すように形成すると共に、磁気ヘツド
２が移動する位置に切欠部を設けるようにしたの
で、磁気シート３が回転していないときに磁気シ
ート３はバツクプレート１に点接触し、磁気シー
ト３とバツクプレート１との接触面積が極めて少
なくなり、磁気シート３の張りつきがなくなり、
磁気シート４の起動が円滑になり、シート駆動モ
ータ４を起動した際のシート駆動モータ４の電力
損が少なくなり良好に回転し良好な記録再生がな
し得る利益がある。また、磁気シート３がバツク
プレート１上を摺動する際に磁気シート３につく
キズが少なくなり磁気シート３の寿命が長くなる
と共に、温度、湿度等の物理的条件が変わつて例
えば露結を生じてもバツクプレート１と磁気シー
ト３は点接触するのみなので負荷変動が生じても
回転速度のサーボ（図示せず）のかかりも特に支
障なく、磁気シート３の回転を安定化できる利益
もある。また、バツクプレート１に電気抵抗値の
小さいグラフアイトをまぜているので磁気シート
３に帯電した電荷はこのグラフアイトを通じて帯
電による磁気シート３の回転むらが生じない利益
もある。 As described above, according to the present invention, unlike the prior art, the back plate 1 is made of a polymer composite material whose main composition is glass beads. 10μm
Since the magnetic sheet 3 is formed to protrude to some extent and has a notch at the position where the magnetic head 2 moves, the magnetic sheet 3 comes into point contact with the back plate 1 when the magnetic sheet 3 is not rotating, and the magnetic sheet 3 The contact area between the magnetic sheet 3 and the back plate 1 becomes extremely small, and the magnetic sheet 3 no longer sticks.
There is an advantage that the magnetic sheet 4 can be started smoothly, power loss of the sheet drive motor 4 is reduced when the sheet drive motor 4 is started, and the sheet drive motor 4 can rotate well and perform good recording and reproduction. Furthermore, when the magnetic sheet 3 slides on the back plate 1, there are fewer scratches on the magnetic sheet 3, which extends the life of the magnetic sheet 3, and changes in physical conditions such as temperature and humidity can prevent dew condensation, for example. Even if this occurs, the back plate 1 and the magnetic sheet 3 are only in point contact, so even if load fluctuations occur, the rotational speed servo (not shown) is applied without any particular problem, and there is an advantage that the rotation of the magnetic sheet 3 can be stabilized. . Furthermore, since the back plate 1 is mixed with graphite having a small electric resistance value, the charge charged on the magnetic sheet 3 is passed through the graphite, which has the advantage that uneven rotation of the magnetic sheet 3 due to charging does not occur.
尚、本発明は上述実施例に限らず本発明の要旨
を逸脱することなくその他種々の構成が採り得る
ことは勿論である。 It goes without saying that the present invention is not limited to the above-described embodiments, and that various other configurations can be adopted without departing from the gist of the present invention.
第１図は従来の回転シートレコーダの例を示す
構成図、第２図は本発明回転シートレコーダの一
実施例の要部の例を示す断面図、第３図は本発明
の一実施例の要部の例を示す拡大断面図、第４図
及び第５図は本発明の一実施例の磁気シートの回
転の説明に供する線図である。
１はバツクプレート、１ｂは摺動材、１ｃはベ
ース材、１ｄはガラスビーズ、２は磁気ヘツド、
３は磁気シート、４は磁気シート駆動モータであ
る。
FIG. 1 is a configuration diagram showing an example of a conventional rotary sheet recorder, FIG. 2 is a cross-sectional view showing an example of a main part of an embodiment of the rotary sheet recorder of the present invention, and FIG. 3 is a block diagram of an example of an embodiment of the present invention. FIGS. 4 and 5 are enlarged sectional views showing examples of essential parts, and are diagrams for explaining the rotation of a magnetic sheet according to an embodiment of the present invention. 1 is a back plate, 1b is a sliding material, 1c is a base material, 1d is a glass bead, 2 is a magnetic head,
3 is a magnetic sheet, and 4 is a magnetic sheet drive motor.
Claims (1)
ようになされた回転シートレコーダに於いて、 ガラスビーズを主な組成とする高分子複合材料
を用いて表面側の摺動材と該摺動材の下側に設け
られる該摺動材よりもガラスビーズを多く含んだ
ベース材によつて上記バツクプレートを形成し、
上記ガラスビーズを上記バツクプレート摺動材の
他の組成物より0.1〜10μm程度突き出すようにす
ると共に、磁気ヘツドが移動する位置に切欠部を
設けたことを特徴とする回転シートレコーダ。[Claims] 1. In a rotating sheet recorder in which a sheet rotates and slides on a back plate, a sliding material on the surface side is made of a polymer composite material whose main composition is glass beads. and the back plate is formed of a base material containing more glass beads than the sliding material provided below the sliding material,
A rotary sheet recorder characterized in that the glass beads are made to protrude by about 0.1 to 10 μm from the other composition of the back plate sliding material, and a notch is provided at a position where the magnetic head moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7102982A JPS58188360A (en) | 1982-04-27 | 1982-04-27 | Recorder for rotating sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7102982A JPS58188360A (en) | 1982-04-27 | 1982-04-27 | Recorder for rotating sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58188360A JPS58188360A (en) | 1983-11-02 |
| JPH0561694B2 true JPH0561694B2 (en) | 1993-09-06 |
Family
ID=13448685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7102982A Granted JPS58188360A (en) | 1982-04-27 | 1982-04-27 | Recorder for rotating sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58188360A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938212U (en) * | 1972-07-03 | 1974-04-04 |
-
1982
- 1982-04-27 JP JP7102982A patent/JPS58188360A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58188360A (en) | 1983-11-02 |
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