KR870001552A - 자기 기록 매체 - Google Patents
자기 기록 매체 Download PDFInfo
- Publication number
- KR870001552A KR870001552A KR1019860005535A KR860005535A KR870001552A KR 870001552 A KR870001552 A KR 870001552A KR 1019860005535 A KR1019860005535 A KR 1019860005535A KR 860005535 A KR860005535 A KR 860005535A KR 870001552 A KR870001552 A KR 870001552A
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic recording
- carbon black
- nonmagnetic material
- recording media
- 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
- 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
- G11B5/733—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 addition of non-magnetic particles
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
Landscapes
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Abstract
내용 없음.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (2)
- 지지체의 일면측에 자성층을, 다른면쪽에 평균 입자알맹이 약 1O0mμ이하에서, 비표면적 약 30m2/g이상의 카본 블랙을, 평균입자 지름 약 0.01 내지 2μm의 비자성 물질에 흡착시킨 카본 블랙 피착 비자성 물질을 포함하는 수지층을 설치한 것을 특징으로 하는 자기 기록매체.
- 지지체의 일면측에 자성층을, 다른 면측에 비표면적이 30m2／g 이하에서, DBP흡유량이 30㎖/100g 이상의 카본 블랙을 모스 경도 6이상의 비자성 물질에 흡착시킨 카본 블랙 피착 비자성 물질을 포함하는 수지층을 실치한 것을 특징으로 하는 자기 기록 매체.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP165838 | 1985-07-29 | ||
| JP165837 | 1985-07-29 | ||
| JP16583885A JPS6226632A (ja) | 1985-07-29 | 1985-07-29 | 磁気記録媒体 |
| JP16583785A JPS6226631A (ja) | 1985-07-29 | 1985-07-29 | 磁気記録媒体 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR870001552A true KR870001552A (ko) | 1987-03-14 |
| KR900007893B1 KR900007893B1 (ko) | 1990-10-22 |
Family
ID=70227446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019860005535A KR900007893B1 (ko) | 1985-07-29 | 1986-07-09 | 자기 기록매체 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR900007893B1 (ko) |
-
1986
- 1986-07-09 KR KR1019860005535A patent/KR900007893B1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR900007893B1 (ko) | 1990-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| 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: 19930727 Year of fee payment: 4 |
|
| LAPS | Lapse due to unpaid annual fee |