KR900015076A - 자기 기록 매체 - Google Patents
자기 기록 매체 Download PDFInfo
- Publication number
- KR900015076A KR900015076A KR1019900004505A KR900004505A KR900015076A KR 900015076 A KR900015076 A KR 900015076A KR 1019900004505 A KR1019900004505 A KR 1019900004505A KR 900004505 A KR900004505 A KR 900004505A KR 900015076 A KR900015076 A KR 900015076A
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic recording
- recording medium
- recording media
- orientation direction
- coercive force
- 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
-
- 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)
- Hard Magnetic Materials (AREA)
Abstract
내용 없음.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 관계 되는 Ba 페라이드 분말을 자기 분말로서 이용하여 구성된 자기기록 매체의 보자력과, 배향방향(0°)의 잔류 보자력 (Hr (0°))에 대한 배향 방향으로 직각 방향(90°)의 잔류 보자력 (Hr(90°))비의 상관관계를 도시한 것이다.
Claims (1)
- 기체면에 수직, 혹은 면내방향으로 배향한 Ba 페라이트 도포형 자기기록 매체층을 갖춘 자기기록 매체에 있어서, 전술한 자기기록 매체층은 배향 방향의 보자력 (Hc)이 900 Oe 내지 1500 Oe, 배향 방향의 각형비 0.80이상인 동시에 배향 방향 (0°)의 잔류보자력(Hr (0°)과 배향 방향으로 직각 방향 (90°)의 잔류 보자력(Hr 90°) 의 비가, 1<Hr(90°)/ Hr(0°)2.6-10-3. Hc의 범위인 것을 특징으로 하는 자기기록 매체.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1-81935 | 1989-03-31 | ||
JP1081935A JP2644322B2 (ja) | 1989-03-31 | 1989-03-31 | 磁気記録媒体 |
JPP01-081935 | 1989-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR900015076A true KR900015076A (ko) | 1990-10-25 |
KR930009640B1 KR930009640B1 (ko) | 1993-10-08 |
Family
ID=13760342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900004505A KR930009640B1 (ko) | 1989-03-31 | 1990-03-31 | 자기 기록 매체 |
Country Status (4)
Country | Link |
---|---|
US (1) | US5104750A (ko) |
EP (1) | EP0390594A3 (ko) |
JP (1) | JP2644322B2 (ko) |
KR (1) | KR930009640B1 (ko) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5645917A (en) * | 1991-04-25 | 1997-07-08 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
US5827600A (en) * | 1991-01-21 | 1998-10-27 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
JP2563711B2 (ja) * | 1991-01-24 | 1996-12-18 | 松下電器産業株式会社 | 磁気テープ |
JPH0620254A (ja) * | 1992-07-03 | 1994-01-28 | Tdk Corp | 磁気記録媒体およびその製造方法 |
US6213986B1 (en) | 1995-09-29 | 2001-04-10 | Appro Healthcare, Inc. | Liquid flow rate control device |
US5730730A (en) * | 1995-09-29 | 1998-03-24 | Darling, Jr.; Phillip H. | Liquid flow rate control device |
US6579592B1 (en) | 1996-11-29 | 2003-06-17 | Fuji Photo Film Co., Ltd | Magnetic recording tape with controlled Hc and magnetic flux/unit area value and controlled Cl/Fe intensity |
EP0962919A1 (en) | 1997-02-10 | 1999-12-08 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
US6432503B2 (en) | 1997-03-31 | 2002-08-13 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
EP0889464B1 (en) | 1997-06-30 | 2003-09-03 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
US6096406A (en) * | 1997-07-15 | 2000-08-01 | Fuji Photo Film Co., Ltd. | Magnetic recording medium |
JPH11185240A (ja) | 1997-10-14 | 1999-07-09 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
US6444290B1 (en) | 1998-06-11 | 2002-09-03 | Fuji Photo Film Co., Ltd. | Magnetic recording medium comprising a support containing a specific size filler and having a specific concentration of surface protrusions |
JP2000011352A (ja) | 1998-06-22 | 2000-01-14 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
KR20120036536A (ko) * | 2010-10-08 | 2012-04-18 | 삼성전기주식회사 | 고주파수 비드용 페라이트 조성물과 이를 이용한 칩 비드 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4699771A (en) * | 1984-05-14 | 1987-10-13 | Kabushiki Kaisha Toshiba | Magnetic recording powder, method of manufacturing thereof and application thereof |
JPS62176921A (ja) * | 1986-01-29 | 1987-08-03 | Toda Kogyo Corp | 板状Baフエライト微粒子粉末の製造法 |
EP0232131B1 (en) * | 1986-01-29 | 1991-09-18 | Toda Kogyo Corp. | Plate-like barium ferrite particles suitable for use in magnetic recording and process for producing the same |
JPS63171418A (ja) * | 1987-01-09 | 1988-07-15 | Hitachi Maxell Ltd | 磁気記録媒体 |
-
1989
- 1989-03-31 JP JP1081935A patent/JP2644322B2/ja not_active Expired - Lifetime
-
1990
- 1990-03-30 EP EP19900303448 patent/EP0390594A3/en not_active Ceased
- 1990-03-30 US US07/501,719 patent/US5104750A/en not_active Expired - Fee Related
- 1990-03-31 KR KR1019900004505A patent/KR930009640B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2644322B2 (ja) | 1997-08-25 |
EP0390594A3 (en) | 1991-01-16 |
KR930009640B1 (ko) | 1993-10-08 |
JPH02260225A (ja) | 1990-10-23 |
US5104750A (en) | 1992-04-14 |
EP0390594A2 (en) | 1990-10-03 |
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Legal Events
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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: 19971226 Year of fee payment: 6 |
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LAPS | Lapse due to unpaid annual fee |