JPH0568762B2 - - Google Patents
Info
- Publication number
- JPH0568762B2 JPH0568762B2 JP15810587A JP15810587A JPH0568762B2 JP H0568762 B2 JPH0568762 B2 JP H0568762B2 JP 15810587 A JP15810587 A JP 15810587A JP 15810587 A JP15810587 A JP 15810587A JP H0568762 B2 JPH0568762 B2 JP H0568762B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- magneto
- magnetic
- optical disk
- recording
- 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 - Fee Related
Links
- 230000035699 permeability Effects 0.000 claims description 19
- 239000000696 magnetic material Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 229910001035 Soft ferrite Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 229910003962 NiZn Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 etc.) Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910000702 sendust Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15810587A JPS643801A (en) | 1987-06-24 | 1987-06-24 | Magnetic field impressing electromagnet for magneto-optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15810587A JPS643801A (en) | 1987-06-24 | 1987-06-24 | Magnetic field impressing electromagnet for magneto-optical disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS643801A JPS643801A (en) | 1989-01-09 |
| JPH0568762B2 true JPH0568762B2 (en]) | 1993-09-29 |
Family
ID=15664413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15810587A Granted JPS643801A (en) | 1987-06-24 | 1987-06-24 | Magnetic field impressing electromagnet for magneto-optical disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643801A (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5625607A (en) * | 1992-02-13 | 1997-04-29 | Canon Kabushiki Kaisha | Magneto-optical disk apparatus including two magnetic field applying devices, one of which has a substantial ring-shaped core member with a gap in a portion thereof |
-
1987
- 1987-06-24 JP JP15810587A patent/JPS643801A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS643801A (en) | 1989-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |