KR920010548A - 자기 기록 매체 - Google Patents
자기 기록 매체 Download PDFInfo
- Publication number
- KR920010548A KR920010548A KR1019900018013A KR900018013A KR920010548A KR 920010548 A KR920010548 A KR 920010548A KR 1019900018013 A KR1019900018013 A KR 1019900018013A KR 900018013 A KR900018013 A KR 900018013A KR 920010548 A KR920010548 A KR 920010548A
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic recording
- betaine
- recording medium
- magnetic
- recording media
- 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
- 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
-
- 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
- G11B5/708—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 addition of non-magnetic particles to the layer
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
내용 없음.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (4)
- 비자성 지지체 상에 육방정계 페라이트를 사용하는 자성층을 갖는 고밀도 고정밀용 자기기록 매체에 있어서, 자성층이 대전방지제로서 베타인 화합물 또는 그 유도체를 함유하는 것을 특징으로 하는 자기기록 매체.
- 제1항에 있어서, 상기 베타인 화합물의 첨가량이 자성체중의 육방정계 페라이트 자성분말 100중량부에 대하여 0.1내지 5.0중량부인 것을 특징으로 하는 자기기록 매체.
- 제2항에 있어서, 상기 베타인 화합물이 카르복실 베타인 계인 것을 특징으로 하는 자기기록 매체.
- 제3항에 있어서, 상기 베타인 화합물이 알킬디메틸 베타인 또는 라우릴디메틸 베타인인 것을 특징으로 하는 자기기록 매체.※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900018013A KR920009772B1 (ko) | 1990-11-08 | 1990-11-08 | 자기기록 매체 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900018013A KR920009772B1 (ko) | 1990-11-08 | 1990-11-08 | 자기기록 매체 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920010548A true KR920010548A (ko) | 1992-06-26 |
| KR920009772B1 KR920009772B1 (ko) | 1992-10-22 |
Family
ID=19305745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900018013A KR920009772B1 (ko) | 1990-11-08 | 1990-11-08 | 자기기록 매체 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR920009772B1 (ko) |
-
1990
- 1990-11-08 KR KR1019900018013A patent/KR920009772B1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR920009772B1 (ko) | 1992-10-22 |
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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: 19971001 Year of fee payment: 6 |
|
| LAPS | Lapse due to unpaid annual fee |