JPS5589928A - Vertical magnetic recorder and its reproduction system - Google Patents
Vertical magnetic recorder and its reproduction systemInfo
- Publication number
- JPS5589928A JPS5589928A JP15997478A JP15997478A JPS5589928A JP S5589928 A JPS5589928 A JP S5589928A JP 15997478 A JP15997478 A JP 15997478A JP 15997478 A JP15997478 A JP 15997478A JP S5589928 A JPS5589928 A JP S5589928A
- Authority
- JP
- Japan
- Prior art keywords
- vertical magnetic
- thin film
- light
- substance
- magnetic recorder
- 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
Links
Abstract
PURPOSE: To increase the recording density possible for reproduction, by detecting the reflection light subject to the magnetic and optical operation with the thin film of ferromagnetic substance or ferroelectric substance closed to the magnetic recording media and projected with light.
CONSTITUTION: The vertical magnetic recorder consists of the substrate 11, permalloy 12, vertical magnetic recording media 13 consisting of the Co-Cr having easy magnetizing axis vertically, and thin film 15 of ferromagnetic substance or ferroelectric substance adhered to the media 13. The light from the light source 17 is projected to the vertical magnetic recorder 16 from the light source 17 via the spot position adjusting mirror 18, and reproduction is made by sensing the reflection light subject to electrooptical operation with the thin film 15 of ferromagnetic substance or ferroelectric substance adhered to the vertical magnetic recording thin film 13 by means of the photodetector 19. Thus, the information recorded in high density can be reproduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15997478A JPS5589928A (en) | 1978-12-27 | 1978-12-27 | Vertical magnetic recorder and its reproduction system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15997478A JPS5589928A (en) | 1978-12-27 | 1978-12-27 | Vertical magnetic recorder and its reproduction system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5589928A true JPS5589928A (en) | 1980-07-08 |
Family
ID=15705232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15997478A Pending JPS5589928A (en) | 1978-12-27 | 1978-12-27 | Vertical magnetic recorder and its reproduction system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5589928A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57164418A (en) * | 1981-04-02 | 1982-10-09 | Ricoh Co Ltd | Vertical heat magnetic recording medium |
JPS57169996A (en) * | 1981-04-09 | 1982-10-19 | Sharp Corp | Magnetooptic storage element |
JPS5819753A (en) * | 1981-07-30 | 1983-02-04 | Nec Corp | Vertical magnetic recording medium and reproducing method of vertical magnetizing signal using said recording medium |
JPS5841451A (en) * | 1981-09-03 | 1983-03-10 | Nec Corp | Vertical magnetic recording medium |
JPS5848249A (en) * | 1981-09-17 | 1983-03-22 | Nec Corp | Vertical magnetic recording medium |
JPS58222455A (en) * | 1982-06-18 | 1983-12-24 | Ricoh Co Ltd | Photoelectromagnetic recording medium |
JPS6349325A (en) * | 1986-08-19 | 1988-03-02 | Nippon Steel Corp | Ring accumulation control device in ring focusing device |
-
1978
- 1978-12-27 JP JP15997478A patent/JPS5589928A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57164418A (en) * | 1981-04-02 | 1982-10-09 | Ricoh Co Ltd | Vertical heat magnetic recording medium |
JPH0341906B2 (en) * | 1981-04-02 | 1991-06-25 | ||
JPS57169996A (en) * | 1981-04-09 | 1982-10-19 | Sharp Corp | Magnetooptic storage element |
JPS6227458B2 (en) * | 1981-04-09 | 1987-06-15 | Sharp Kk | |
JPS5819753A (en) * | 1981-07-30 | 1983-02-04 | Nec Corp | Vertical magnetic recording medium and reproducing method of vertical magnetizing signal using said recording medium |
JPS5841451A (en) * | 1981-09-03 | 1983-03-10 | Nec Corp | Vertical magnetic recording medium |
JPS5848249A (en) * | 1981-09-17 | 1983-03-22 | Nec Corp | Vertical magnetic recording medium |
JPS58222455A (en) * | 1982-06-18 | 1983-12-24 | Ricoh Co Ltd | Photoelectromagnetic recording medium |
JPS6349325A (en) * | 1986-08-19 | 1988-03-02 | Nippon Steel Corp | Ring accumulation control device in ring focusing device |
JPH0257446B2 (en) * | 1986-08-19 | 1990-12-05 | Nippon Steel Corp |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR880014524A (en) | Optical magnetic recording system | |
KR920017040A (en) | Magneto-optical recording method and magneto-optical recording and reproducing apparatus | |
JPS5792446A (en) | Recording, reproduction and erasure system for information using photomagnetic recording medium | |
JPS5769541A (en) | Recording medium and recording and reproducing system using sand medium | |
JPS5424008A (en) | Magnetic recording and photo reproducing system | |
ATE172048T1 (en) | MAGNETOPTICAL INFORMATION RECORDING AND PLAYBACKING DEVICE | |
JPS5589928A (en) | Vertical magnetic recorder and its reproduction system | |
EP0650157A4 (en) | Magnetic recording medium, its recording/reproducing method and information processor which uses the medium and method. | |
JPS56153546A (en) | Magnetic recording medium | |
EP0195227A3 (en) | Magneto-optical disc memory | |
JPS57172552A (en) | Reproducing method for stored information | |
GB883936A (en) | Apparatus for reading information magnetically recorded on a record medium | |
GB935230A (en) | Improvements in or relating to magnetic recording and reproducing systems | |
JPS567247A (en) | Information reproducing device | |
GB1138997A (en) | Magnetic data storage | |
JPS6417234A (en) | Optical information recording method and information recording medium | |
JPS55153142A (en) | Magnetic recording and reproducing device | |
JPS56137538A (en) | Magneto-optical playback device | |
JPS6442044A (en) | Optical recording medium | |
JPS57164459A (en) | Method and device for vertical magnetic recording light reproduction | |
JPS57186248A (en) | Vertically thermomagnetic recording and reproducing system | |
JPS5727450A (en) | Magnetic recording medium | |
JPS57113415A (en) | Vertical magnetic recording medium | |
JPS56140536A (en) | Optical video disk using ferromagnetic metal as reflecting film | |
JPS57113414A (en) | Servo disk system |