DE3480970D1 - Magnetisches aufzeichnungsmedium und magnetische teilchen hierfuer. - Google Patents
Magnetisches aufzeichnungsmedium und magnetische teilchen hierfuer.Info
- Publication number
- DE3480970D1 DE3480970D1 DE8484109720T DE3480970T DE3480970D1 DE 3480970 D1 DE3480970 D1 DE 3480970D1 DE 8484109720 T DE8484109720 T DE 8484109720T DE 3480970 T DE3480970 T DE 3480970T DE 3480970 D1 DE3480970 D1 DE 3480970D1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- recording medium
- magnetic recording
- magnetic particles
- particles therefor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000006249 magnetic particle Substances 0.000 title 1
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
- G11B5/714—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
-
- 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
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
-
- 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
- G11B5/70652—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 gamma - Fe2 O3
-
- 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
- G11B5/712—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 surface treatment or coating of 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58151116A JPS6042804A (ja) | 1983-08-18 | 1983-08-18 | 磁気記録媒体及び磁気記録媒体用磁性粉末 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3480970D1 true DE3480970D1 (de) | 1990-02-08 |
Family
ID=15511706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8484109720T Expired - Lifetime DE3480970D1 (de) | 1983-08-18 | 1984-08-16 | Magnetisches aufzeichnungsmedium und magnetische teilchen hierfuer. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4693931A (de) |
EP (1) | EP0135774B1 (de) |
JP (1) | JPS6042804A (de) |
KR (1) | KR920003489B1 (de) |
DE (1) | DE3480970D1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5028483A (en) * | 1990-06-01 | 1991-07-02 | Minnesota Mining And Manufacturing Company | Magnetic recording medium comprising acicular dendrite free iron oxide magnetic pigment particles |
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 |
US5397826A (en) * | 1993-12-22 | 1995-03-14 | Eastman Kodak Company | Coating compositions for a transparent magnetic recording layer |
JPH08102034A (ja) * | 1994-09-19 | 1996-04-16 | Minnesota Mining & Mfg Co <3M> | 磁気記録媒体 |
KR20020031823A (ko) * | 2000-10-24 | 2002-05-03 | 김동수 | 파우더 고착 방지 수단을 구비한 배기가스 이송 파이프 |
AU2003274417A1 (en) * | 2002-10-30 | 2004-05-25 | Council Of Scientific And Industrial Research | Process for preparing nanosized acicular magnetic maghemite phase iron oxide particles |
KR101268335B1 (ko) * | 2003-11-10 | 2013-05-28 | 파나소닉 주식회사 | 기록매체, 재생장치, 재생방법 |
DE102014206349A1 (de) * | 2014-04-02 | 2015-10-08 | Tesa Se | Klebeband |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3003965A (en) * | 1953-09-29 | 1961-10-10 | Philips Corp | Method of preparing a magnetic sound carrier |
JPS52142756A (en) * | 1976-05-24 | 1977-11-28 | Tdk Corp | Nitrocellulose and magnetic recording media |
US4202871A (en) * | 1977-11-14 | 1980-05-13 | Sakai Chemical Industry Co., Ltd. | Production of acicular ferric oxide |
JPS54107709A (en) * | 1978-02-10 | 1979-08-23 | Victor Co Of Japan Ltd | Magnetic recording material |
JPS554694A (en) * | 1979-05-10 | 1980-01-14 | Canon Inc | Electronic apparatus |
JPS5661035A (en) * | 1979-10-24 | 1981-05-26 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS5677926A (en) * | 1979-11-28 | 1981-06-26 | Tdk Corp | Magnetic recording medium using cobalt adhesion type iron oxide |
EP0043882A1 (de) * | 1980-07-16 | 1982-01-20 | Kodak-Pathe | Magnetisches Aufzeichnungselement, Verfahren zu seiner Herstellung und seine Verwendung beim Aufzeichnen |
JPH0721854B2 (ja) * | 1981-05-29 | 1995-03-08 | 富士写真フイルム株式会社 | 磁気記録体 |
JPS5819735A (ja) * | 1981-07-25 | 1983-02-04 | Tdk Corp | 磁気記録媒体 |
JPS6057527A (ja) * | 1983-09-08 | 1985-04-03 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
KR900000429B1 (ko) * | 1984-05-31 | 1990-01-30 | 도다 교오교오 가부시끼가이샤 | 자기 기록용 판상 아철산 바륨입자와 그 제조방법 |
-
1983
- 1983-08-18 JP JP58151116A patent/JPS6042804A/ja active Granted
-
1984
- 1984-08-16 DE DE8484109720T patent/DE3480970D1/de not_active Expired - Lifetime
- 1984-08-16 EP EP84109720A patent/EP0135774B1/de not_active Expired - Lifetime
- 1984-08-16 KR KR1019840004910A patent/KR920003489B1/ko not_active IP Right Cessation
- 1984-08-17 US US06/641,733 patent/US4693931A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPS6042804A (ja) | 1985-03-07 |
EP0135774A3 (en) | 1987-04-08 |
US4693931A (en) | 1987-09-15 |
EP0135774A2 (de) | 1985-04-03 |
KR850002138A (ko) | 1985-05-06 |
KR920003489B1 (ko) | 1992-05-01 |
JPH0544163B2 (de) | 1993-07-05 |
EP0135774B1 (de) | 1990-01-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |