KR900004750B1 - 고밀도 자기기록용 자성분과 그를 이용한 자기기록용 매체 - Google Patents
고밀도 자기기록용 자성분과 그를 이용한 자기기록용 매체 Download PDFInfo
- Publication number
- KR900004750B1 KR900004750B1 KR1019860007201A KR860007201A KR900004750B1 KR 900004750 B1 KR900004750 B1 KR 900004750B1 KR 1019860007201 A KR1019860007201 A KR 1019860007201A KR 860007201 A KR860007201 A KR 860007201A KR 900004750 B1 KR900004750 B1 KR 900004750B1
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic
- magnetic recording
- high density
- ferrite
- recording medium
- Prior art date
Links
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
- G11B5/62—Record carriers characterised by the selection of the material
-
- 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
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70642—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances iron oxides
- G11B5/70678—Ferrites
Landscapes
- Magnetic Record Carriers (AREA)
- Compounds Of Iron (AREA)
- Paints Or Removers (AREA)
- Hard Magnetic Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60190113A JP2509558B2 (ja) | 1985-08-29 | 1985-08-29 | 高密度磁気記録用磁性粉およびそれを用いた磁気記録用媒体 |
JP60-190113 | 1985-08-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR870002554A KR870002554A (ko) | 1987-03-31 |
KR900004750B1 true KR900004750B1 (ko) | 1990-07-05 |
Family
ID=16252595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019860007201A KR900004750B1 (ko) | 1985-08-29 | 1986-08-29 | 고밀도 자기기록용 자성분과 그를 이용한 자기기록용 매체 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2509558B2 (ja) |
KR (1) | KR900004750B1 (ja) |
DE (1) | DE3628874A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06104574B2 (ja) * | 1985-11-21 | 1994-12-21 | 日本ゼオン株式会社 | 塗布膜タイプの磁気記録用磁性粉 |
US4820433A (en) * | 1986-09-05 | 1989-04-11 | Nippon Zeon Co., Ltd. | Magnetic powder for magnetic recording |
JPH0582324A (ja) * | 1991-02-27 | 1993-04-02 | Toshiba Corp | 磁気記録用磁性粉およびそれを用いた磁気記録媒体 |
JP3095047B2 (ja) * | 1993-01-28 | 2000-10-03 | 戸田工業株式会社 | 磁気カード用マグネトプランバイト型フェライト粒子粉末及びその製造法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5667904A (en) * | 1979-11-08 | 1981-06-08 | Toshiba Corp | Preparation method of megnetic powder for high density magnetic recording |
US4670323A (en) * | 1983-11-26 | 1987-06-02 | Ricoh Company, Ltd. | Magneto-optic recording medium having a metal oxide recording layer |
-
1985
- 1985-08-29 JP JP60190113A patent/JP2509558B2/ja not_active Expired - Lifetime
-
1986
- 1986-08-26 DE DE19863628874 patent/DE3628874A1/de active Granted
- 1986-08-29 KR KR1019860007201A patent/KR900004750B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3628874C2 (ja) | 1989-10-12 |
JPS6251026A (ja) | 1987-03-05 |
KR870002554A (ko) | 1987-03-31 |
DE3628874A1 (de) | 1987-03-05 |
JP2509558B2 (ja) | 1996-06-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 19971226 Year of fee payment: 9 |
|
LAPS | Lapse due to unpaid annual fee |