WO1991003047A1 - Haltevorrichtung für eine platte in einem magneto-optischen aufzeichnungs- und/oder wiedergabegerät - Google Patents
Haltevorrichtung für eine platte in einem magneto-optischen aufzeichnungs- und/oder wiedergabegerät Download PDFInfo
- Publication number
- WO1991003047A1 WO1991003047A1 PCT/EP1990/001339 EP9001339W WO9103047A1 WO 1991003047 A1 WO1991003047 A1 WO 1991003047A1 EP 9001339 W EP9001339 W EP 9001339W WO 9103047 A1 WO9103047 A1 WO 9103047A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- arm
- lever
- disk
- plate
- electromagnet
- 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.)
- Ceased
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
- G11B17/02—Details
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/05—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs not contained within cartridges
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10556—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position
- G11B11/10558—Disposition or mounting of transducers relative to record carriers with provision for moving or switching or masking the transducers in or out of their operative position in view of the loading or unloading of the carrier
Definitions
- Holding device for a disk in a magneto-opti see recording and / or reproducing device is a magneto-opti see recording and / or reproducing device.
- the invention relates to a holding device for a plate in a magneto-optic recording and / or playback device, in which the plate is held on one side by a first wheel, in which a first arm with a from the other side second wheel can be pivoted about an axis against the first wheel in order to center the plate and in which an electromagnet is provided to remagnetize the plate.
- a disk In a magneto-optical recording and / or reproducing device, a disk, the recording medium, is pressed onto another wheel, which is firmly connected to a housing, by means of a wheel which is attached to a pivotable arm, so that the Plate is centered on the disk drive.
- One of the two Wheels usually the wheel located opposite the arm on the housing, are driven by a motor.
- One side of the plate for example the lower one, is scanned by an optical scanning device.
- On the opposite upper side of the plate there is an electromagnet as close as possible to the surface of the plate, which magnetizes the magnetic domains of the plate.
- the electromagnet When moving the plate in and out, the electromagnet must be raised enough to prevent it from hitting the plate and damaging its sensitive surface with scratches.
- the object of the invention is therefore to provide a device for a magneto-optical recording and / or reproducing device which prevents the electromagnet from scratching its surface by scratches when the device is loaded and unloaded with a plate.
- the invention solves this problem in that the electromagnet is seated on a second arm which can be pivoted about an axis against the plate, in that a lever is fastened to an axis on the first arm so that the second arm with the electromagments on it one arm of the lever rests so that a stop is provided for the other arm of the lever, so that when the first arm is pivoted away from the plate, the one arm of the lever presses the second arm with the electromagnet away from the plate so that the other Arm of the lever hits the stop, so that the lever is rotated about its axis, whereby one arm of the lever presses the second arm even further away from the plate.
- FIG. 1 shows a disc in the playback position in a magneto-optical recording and / or reproducing device
- Figure 2 shows a first embodiment of the invention in plan view
- Figure 3 is a side view of the first embodiment in a first position
- Figure 4 is a side view of the first embodiment in a second position.
- FIG. 1 shows how a plate CD is pressed against a wheel R1 by means of a wheel R2, which is seated on an arm AR1 and can be pivoted about an axis A1, and is centered on this wheel.
- the wheel R1 is driven by a motor MO.
- the lower side of the disc CD is scanned by an optical scanning device AV.
- An electromagnet M is located just above the upper side of the disk CD in order to be able to reverse the direction of magnetization of the magnetic domains in the disk CD.
- the electromagnet M and the optical scanning device AV are moved in the radial direction with respect to the plate CD, as indicated by the double arrow l.
- FIG. 2 shows the arm AR1 with the wheel R2, which can be pivoted about the axis A1.
- the magnet M which is drawn in dashed lines, is attached to an arm AR2 which is pivotable about an axis A2.
- a lever H is mounted on the arm AR1 so that it can rotate about an axis A3.
- Arm AR2 rests on one arm AR3 of lever H3. who carries the electromagnet M.
- a stop AS is provided for the other arm AR4 of the lever H.
- Figure 3 shows a side view of the A ⁇ s Equipmentsbei sp e Is, ⁇ n_ the arm AR1 is in the lower position.
- the disc CD is in the playback position.
- the arm AR2 slides on the one arm AR3 of the lever H, which in the unclamping position is parallel to the disc top area runs.
- the arm AR2 can be pressed onto the arm AR3 of the lever H, for example by means of a spring.
- FIG. 4 shows the position of the arm AR1 in which a disc is moved into the play position or out of the play position.
- the two arms AR3 and AR4 of the lever H can be made rotatable relative to one another.
- a spring, not shown, keeps it parallel in the playback position, while in FIG. This measure has the advantage that the arm AR1 can be raised further without the arm AR2 with the magnet interfering with this movement.
- the arm AR1 For loading and unloading the magneto-opti see recording and / or playback device with a disc CD, the arm AR1 is pivoted upward in the direction of the arrow.
- One arm AR3 of lever H therefore also presses arm AR2 with electromagnet M upwards.
- the lever H rotates about its axis A3, so that the one arm AR3 of the lever H pushes the arm AR2 further upwards, that is to say further away from the plate CD presses. In this way, a sufficiently large distance between the electromagnet and the plate is achieved when loading and unloading the device with a plate.
- the plate CD is therefore protected from scratches by the electromagnet M.
- the invention is suitable for magneto-opti see recording and / or reproducing devices. It does not matter whether the plate in the device e.g. is horizontal or vertical.
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90913822A EP0489112B1 (de) | 1989-08-24 | 1990-08-16 | Haltevorrichtung für eine platte in einem magneto-optischen aufzeichnungs- und/oder wiedergabegerät |
| FI920770A FI920770A0 (fi) | 1989-08-24 | 1990-08-16 | Skivhaollare foer en magnetooptisk inspelnings och/eller avspelningsanordning. |
| DE59006250T DE59006250D1 (de) | 1989-08-24 | 1990-08-16 | Haltevorrichtung für eine platte in einem magneto-optischen aufzeichnungs- und/oder wiedergabegerät. |
| KR1019920700410A KR100227667B1 (ko) | 1989-08-24 | 1990-08-16 | 자기광학 기록 및/또는 재생장치의 레코드용 고정장치 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3927903.0 | 1989-08-24 | ||
| DE3927903A DE3927903A1 (de) | 1989-08-24 | 1989-08-24 | Haltevorrichtung fuer eine platte in einem magneto-optischen aufzeichnungs- und/oder wiedergabegeraet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1991003047A1 true WO1991003047A1 (de) | 1991-03-07 |
Family
ID=6387739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1990/001339 Ceased WO1991003047A1 (de) | 1989-08-24 | 1990-08-16 | Haltevorrichtung für eine platte in einem magneto-optischen aufzeichnungs- und/oder wiedergabegerät |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US5223999A (de) |
| EP (1) | EP0489112B1 (de) |
| JP (1) | JP2804175B2 (de) |
| KR (1) | KR100227667B1 (de) |
| CN (1) | CN1022444C (de) |
| AT (1) | ATE107791T1 (de) |
| AU (1) | AU6437090A (de) |
| DD (1) | DD297275A5 (de) |
| DE (2) | DE3927903A1 (de) |
| ES (1) | ES2056486T3 (de) |
| FI (1) | FI920770A0 (de) |
| HK (1) | HK105695A (de) |
| HU (1) | HU206558B (de) |
| MY (1) | MY105923A (de) |
| TR (1) | TR24702A (de) |
| WO (1) | WO1991003047A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69228279T2 (de) * | 1991-08-30 | 1999-07-08 | Canon K.K., Tokio/Tokyo | Gerät für magnetooptische Platte mit schwebendem Magnetkopf |
| US5986451A (en) * | 1996-10-30 | 1999-11-16 | Phase Metrics, Inc. | Low z-height loader for a head gimbal assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0222916A1 (de) * | 1985-04-29 | 1987-05-27 | Sony Corporation | Externes magnetfeld-umpolungsgerät für fotomagnetische platten |
| GB2192750A (en) * | 1986-07-14 | 1988-01-20 | Canon Kk | Front loading opto-magnetic recording apparatus with bias magnetic field means retractable from medium insertion path |
| US4740937A (en) * | 1984-12-30 | 1988-04-26 | Olympus Optical Company, Limited | Optical magnetic information recording and reproducing apparatus with separate supporting members for supporting disc clamper and magnetic field biasing device |
| DE3811184A1 (de) * | 1987-03-31 | 1988-10-20 | Toshiba Kawasaki Kk | Vorrichtung zum beaufschlagen eines optisch-magnetischen aufzeichnungstraegers mit einem magnetfeld |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3314559C2 (de) * | 1982-04-22 | 1994-03-03 | Canon Denshi Kk | Magnetscheibengerät für ein scheibenförmiges Magnetaufzeichnungsmedium |
| JPS6079556A (ja) * | 1983-10-06 | 1985-05-07 | Janome Sewing Mach Co Ltd | フロツピ−デイスク装置のパツド昇降機構 |
| KR920004585B1 (ko) * | 1986-05-26 | 1992-06-11 | 오끼뎅끼고오교 가부시끼가이샤 | 플렉시블 디스크 드라이브의 수동식 헤드 로우딩 장치 |
| JPH01292651A (ja) * | 1988-05-19 | 1989-11-24 | Olympus Optical Co Ltd | 光磁気記録装置のバイアス磁界移動装置 |
| JP3179458B2 (ja) * | 1989-07-07 | 2001-06-25 | ソニー株式会社 | 光磁気ディスク装置 |
-
1989
- 1989-08-24 DE DE3927903A patent/DE3927903A1/de not_active Withdrawn
-
1990
- 1990-08-16 EP EP90913822A patent/EP0489112B1/de not_active Expired - Lifetime
- 1990-08-16 DE DE59006250T patent/DE59006250D1/de not_active Expired - Fee Related
- 1990-08-16 HU HU9200544A patent/HU206558B/hu not_active IP Right Cessation
- 1990-08-16 ES ES90913822T patent/ES2056486T3/es not_active Expired - Lifetime
- 1990-08-16 JP JP2512838A patent/JP2804175B2/ja not_active Expired - Fee Related
- 1990-08-16 AT AT90913822T patent/ATE107791T1/de active
- 1990-08-16 AU AU64370/90A patent/AU6437090A/en not_active Abandoned
- 1990-08-16 FI FI920770A patent/FI920770A0/fi not_active Application Discontinuation
- 1990-08-16 WO PCT/EP1990/001339 patent/WO1991003047A1/de not_active Ceased
- 1990-08-16 KR KR1019920700410A patent/KR100227667B1/ko not_active Expired - Fee Related
- 1990-08-17 TR TR90/0795A patent/TR24702A/xx unknown
- 1990-08-22 DD DD90343581A patent/DD297275A5/de not_active IP Right Cessation
- 1990-08-23 MY MYPI90001425A patent/MY105923A/en unknown
- 1990-08-24 CN CN90108173A patent/CN1022444C/zh not_active Expired - Fee Related
-
1992
- 1992-03-03 US US07/880,936 patent/US5223999A/en not_active Expired - Fee Related
-
1995
- 1995-06-29 HK HK105695A patent/HK105695A/xx not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4740937A (en) * | 1984-12-30 | 1988-04-26 | Olympus Optical Company, Limited | Optical magnetic information recording and reproducing apparatus with separate supporting members for supporting disc clamper and magnetic field biasing device |
| EP0222916A1 (de) * | 1985-04-29 | 1987-05-27 | Sony Corporation | Externes magnetfeld-umpolungsgerät für fotomagnetische platten |
| GB2192750A (en) * | 1986-07-14 | 1988-01-20 | Canon Kk | Front loading opto-magnetic recording apparatus with bias magnetic field means retractable from medium insertion path |
| DE3811184A1 (de) * | 1987-03-31 | 1988-10-20 | Toshiba Kawasaki Kk | Vorrichtung zum beaufschlagen eines optisch-magnetischen aufzeichnungstraegers mit einem magnetfeld |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 10, no. 127 (P-455)(2184) 13 Mai 1986, & JP-A-60 251541 (MATSUSHITA DENKI SANGYO) 12 Dezember 1985, siehe das ganze Dokument * |
| PATENT ABSTRACTS OF JAPAN vol. 9, no. 323 (P-414)(2046) 18 Dezember 1985, & JP-A-60 147949 (CANON) 05 August 1985, siehe das ganze Dokument * |
Also Published As
| Publication number | Publication date |
|---|---|
| FI920770A7 (fi) | 1992-02-21 |
| DE3927903A1 (de) | 1991-02-28 |
| EP0489112B1 (de) | 1994-06-22 |
| US5223999A (en) | 1993-06-29 |
| JPH05500130A (ja) | 1993-01-14 |
| JP2804175B2 (ja) | 1998-09-24 |
| EP0489112A1 (de) | 1992-06-10 |
| KR100227667B1 (ko) | 1999-11-01 |
| ES2056486T3 (es) | 1994-10-01 |
| HUT60058A (en) | 1992-07-28 |
| TR24702A (tr) | 1992-03-01 |
| HK105695A (en) | 1995-07-07 |
| MY105923A (en) | 1995-02-28 |
| CN1022444C (zh) | 1993-10-13 |
| CN1050281A (zh) | 1991-03-27 |
| FI920770A0 (fi) | 1992-02-21 |
| HU206558B (en) | 1992-11-30 |
| DD297275A5 (de) | 1992-01-02 |
| HU9200544D0 (en) | 1992-05-28 |
| AU6437090A (en) | 1991-04-03 |
| DE59006250D1 (de) | 1994-07-28 |
| ATE107791T1 (de) | 1994-07-15 |
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