KR920013278A - 자기기록 매체 - Google Patents
자기기록 매체 Download PDFInfo
- Publication number
- KR920013278A KR920013278A KR1019900021141A KR900021141A KR920013278A KR 920013278 A KR920013278 A KR 920013278A KR 1019900021141 A KR1019900021141 A KR 1019900021141A KR 900021141 A KR900021141 A KR 900021141A KR 920013278 A KR920013278 A KR 920013278A
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic recording
- recording medium
- weight
- parts
- binder
- 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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
-
- 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
- G11B5/702—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 bonding agent
- G11B5/7021—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 bonding agent containing a polyurethane or a polyisocyanate
Landscapes
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (3)
- 비자성 지지체의 한쪽면에는 강자성 분말을 결합체중에 분산시켜서 된 자성층이 형성되어 있고 그 반대쪽면에는 백코오팅층이 형성되어 있는 자기기록 매체에 있어서, 상기 백코오팅층은 카본블랙 100중량부 및 지방산으로 표면처리된 탄산칼슘 5 내지 20중량부로 된 충진제와 알루미늄계 커플링제 0.5내지 5중량부를 페녹시 수지 및 폴리우레탄 수지된 결합제에, 충진제에 대한 결합제의 비율이 30:70 내지 60:40중량비가 되도록 혼합, 분산시켜서 된 것임을 특징으로 하는 자기기록 매체.
- 제1항에 있어서, 상기 카본블랙은 그 평균입경이 10 내지 30nm인 것임을 특징으로 하는 자기기록 매체.
- 제1항에 있어서, 상기 탄산칼슘은 그 평균입경이 70 내지 200nm인 것임을 특징으로 하는 자기기록 매체.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900021141A KR930001887B1 (ko) | 1990-12-20 | 1990-12-20 | 자기기록 매체 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900021141A KR930001887B1 (ko) | 1990-12-20 | 1990-12-20 | 자기기록 매체 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920013278A true KR920013278A (ko) | 1992-07-28 |
| KR930001887B1 KR930001887B1 (ko) | 1993-03-19 |
Family
ID=19307938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900021141A KR930001887B1 (ko) | 1990-12-20 | 1990-12-20 | 자기기록 매체 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR930001887B1 (ko) |
-
1990
- 1990-12-20 KR KR1019900021141A patent/KR930001887B1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR930001887B1 (ko) | 1993-03-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| G160 | Decision to publish patent application | ||
| O035 | Opposition [patent]: request for opposition | ||
| E701 | Decision to grant or registration of patent right | ||
| O073 | Decision to grant registration after opposition [patent]: decision to grant registration | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 19980115 Year of fee payment: 6 |
|
| LAPS | Lapse due to unpaid annual fee |