KR870011581A - 자기 기록 매체 - Google Patents
자기 기록 매체 Download PDFInfo
- Publication number
- KR870011581A KR870011581A KR870003085A KR870003085A KR870011581A KR 870011581 A KR870011581 A KR 870011581A KR 870003085 A KR870003085 A KR 870003085A KR 870003085 A KR870003085 A KR 870003085A KR 870011581 A KR870011581 A KR 870011581A
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic recording
- recording medium
- magnetic
- ferrite particles
- hexagonal ferrite
- 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
-
- 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
- G11B5/7085—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 non-magnetic abrasive 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
- G11B5/68—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
- G11B5/71—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 lubricant
-
- 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
- G11B5/714—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 dimension of the magnetic particles
-
- 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
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
- Y10T428/257—Iron oxide or aluminum oxide
Landscapes
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
- Lubricants (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (5)
- 비자성 지지체상에 판상육방정 페라이트 입자를 주체로하는 자성분말 및 결합제를 포함하는 자성층이 형성되어 자기기록매체에 있어서, 상기의 자성층중에 상기 관상육방정 페라이트 입자 100중량부에 대해서 0.1~30중량부가 되는 비율의 입상 비자성 분말과 윤활제가 포함되어 있는 것을 특징으로 하는 자기 기록매체.
- 자성층이 20용량% 이상의 공극률을 가지며, 그 공극에 윤활제가 유지되어 되는 특허청구의 범위 제1항 기재에 자기 기록 매체.
- 입상비자성분말이 판상육방정 페라이트 입자보다도 비이커스 경도가 큰 것으로 되는 특허청구의 범위 제1항 또는 제2항 기재에 자기 기록 매체.
- 입상 비자성 분말의 평균입자경이 자성층의 두께의 10~75%의 범위에 있는 특허청구의 범위 제1항 또는 제2항 기재에 자기 기록 매체.
- 판상육방정 페라이트 입자의 평균판 지름이0.06μm이상인 특허청구의 범위 제1항 또는 제2항 기재에 자기 기록 매체.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP106371 | 1986-05-09 | ||
JP61106371A JPH0792907B2 (ja) | 1986-05-09 | 1986-05-09 | 磁気記録媒体 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR870011581A true KR870011581A (ko) | 1987-12-24 |
Family
ID=14431862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR870003085A KR870011581A (ko) | 1986-05-09 | 1987-04-01 | 자기 기록 매체 |
Country Status (4)
Country | Link |
---|---|
US (1) | US4913959A (ko) |
EP (1) | EP0244868B1 (ko) |
JP (1) | JPH0792907B2 (ko) |
KR (1) | KR870011581A (ko) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS648508A (en) * | 1987-06-30 | 1989-01-12 | Toshiba Corp | Magnetic recording medium |
KR900002242A (ko) * | 1988-07-14 | 1990-02-28 | 나가이 아쯔시 | 자기디스크 카트리지 |
FR2638016A1 (fr) * | 1988-10-18 | 1990-04-20 | Kodak Pathe | Procede de traitement de surface de couches magnetiques |
JP2924094B2 (ja) * | 1989-06-19 | 1999-07-26 | 住友化学工業株式会社 | 磁気記録媒体 |
DE4022221A1 (de) * | 1990-07-12 | 1992-01-23 | Basf Magnetics Gmbh | Magnetband mit schleifmittel |
JP2883229B2 (ja) * | 1990-09-14 | 1999-04-19 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPH06314446A (ja) * | 1992-06-19 | 1994-11-08 | Tdk Corp | 光磁気ディスク |
JPH11339253A (ja) * | 1998-05-21 | 1999-12-10 | Sony Corp | 磁気記録媒体およびその製造方法 |
US9208937B2 (en) * | 2009-02-27 | 2015-12-08 | Cyntec Co., Ltd. | Choke having a core with a pillar having a non-circular and non-rectangular cross section |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5880136A (ja) * | 1981-11-02 | 1983-05-14 | Fuji Photo Film Co Ltd | 磁気記録材料の製造方法 |
JPS58203625A (ja) * | 1982-05-24 | 1983-11-28 | Toshiba Corp | 磁気記録媒体 |
JPS6070518A (ja) * | 1983-09-28 | 1985-04-22 | Toshiba Corp | 磁気記録媒体 |
JPS60119625A (ja) * | 1983-12-01 | 1985-06-27 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
NL8402136A (nl) * | 1984-07-05 | 1986-02-03 | Pd Magnetics Bv | Magnetisch registratie element en methode voor de vervaardiging ervan. |
JPH0654532B2 (ja) * | 1984-07-12 | 1994-07-20 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPS61104426A (ja) * | 1984-10-24 | 1986-05-22 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
JPH0715746B2 (ja) * | 1985-01-17 | 1995-02-22 | 富士写真フイルム株式会社 | 磁気記録媒体 |
US4567096A (en) * | 1985-03-21 | 1986-01-28 | Piltingsrud Douglas H | Hydrated alumina binder system |
JPH0760512B2 (ja) * | 1985-06-26 | 1995-06-28 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPS62219324A (ja) * | 1986-03-20 | 1987-09-26 | Hitachi Maxell Ltd | 磁気記録媒体 |
-
1986
- 1986-05-09 JP JP61106371A patent/JPH0792907B2/ja not_active Expired - Fee Related
-
1987
- 1987-04-01 KR KR870003085A patent/KR870011581A/ko not_active Application Discontinuation
- 1987-05-07 EP EP87106671A patent/EP0244868B1/en not_active Expired - Lifetime
- 1987-05-08 US US07/047,147 patent/US4913959A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS62264430A (ja) | 1987-11-17 |
EP0244868B1 (en) | 1994-04-20 |
US4913959A (en) | 1990-04-03 |
EP0244868A3 (en) | 1989-10-25 |
JPH0792907B2 (ja) | 1995-10-09 |
EP0244868A2 (en) | 1987-11-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |