DE3856088T2 - Verfahren zur Verbesserung eines magnetischen Aufzeichnungsträgers und magnetischer Aufzeichnungsträger - Google Patents
Verfahren zur Verbesserung eines magnetischen Aufzeichnungsträgers und magnetischer AufzeichnungsträgerInfo
- Publication number
- DE3856088T2 DE3856088T2 DE3856088T DE3856088T DE3856088T2 DE 3856088 T2 DE3856088 T2 DE 3856088T2 DE 3856088 T DE3856088 T DE 3856088T DE 3856088 T DE3856088 T DE 3856088T DE 3856088 T2 DE3856088 T2 DE 3856088T2
- Authority
- DE
- Germany
- Prior art keywords
- recording medium
- magnetic recording
- improving
- magnetic
- medium
- 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
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
- G11B5/70605—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 metals or alloys
-
- 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
- G11B5/7356—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 comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
-
- 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
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
- G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
-
- 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
- G11B5/739—Magnetic recording media substrates
- G11B5/73923—Organic polymer substrates
- G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
- G11B5/73929—Polyester substrates, e.g. polyethylene terephthalate comprising naphthalene ring compounds, e.g. polyethylene naphthalate substrates
-
- 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
-
- 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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62262470A JPH0782633B2 (ja) | 1987-10-16 | 1987-10-16 | 磁気記録媒体 |
JP62262469A JPH0782640B2 (ja) | 1987-10-16 | 1987-10-16 | 磁気記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3856088D1 DE3856088D1 (de) | 1998-01-29 |
DE3856088T2 true DE3856088T2 (de) | 1998-04-09 |
Family
ID=26545557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3856088T Expired - Lifetime DE3856088T2 (de) | 1987-10-16 | 1988-10-14 | Verfahren zur Verbesserung eines magnetischen Aufzeichnungsträgers und magnetischer Aufzeichnungsträger |
Country Status (3)
Country | Link |
---|---|
US (1) | US5055349A (de) |
EP (1) | EP0312074B1 (de) |
DE (1) | DE3856088T2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3032808B2 (ja) * | 1989-09-29 | 2000-04-17 | コニカ株式会社 | 磁気記録媒体の製造方法 |
EP0464827B1 (de) * | 1990-07-05 | 1995-04-19 | Matsushita Electric Industrial Co., Ltd. | Magnetischer Aufzeichnungsträger und dessen Herstellungsverfahren |
JPH04146518A (ja) * | 1990-10-08 | 1992-05-20 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
JP3014009B2 (ja) * | 1991-01-11 | 2000-02-28 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | 磁気記録媒体 |
JPH0547140A (ja) * | 1991-08-10 | 1993-02-26 | Hitachi Maxell Ltd | 磁気テ−プカ−トリツジ |
JP3890373B2 (ja) * | 1996-02-26 | 2007-03-07 | 富士フイルム株式会社 | 磁気記録媒体 |
JP4321461B2 (ja) * | 2005-02-28 | 2009-08-26 | 富士フイルム株式会社 | 磁気記録媒体 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54107313A (en) * | 1978-02-09 | 1979-08-23 | Sony Corp | Magnetic recording medium |
JPS57130234A (en) * | 1981-02-02 | 1982-08-12 | Fuji Photo Film Co Ltd | Magnetic recording medium |
DE3373584D1 (en) * | 1982-09-30 | 1987-10-15 | Hitachi Maxell | Magnetic recording medium |
JPS59188831A (ja) * | 1983-04-11 | 1984-10-26 | Fuji Photo Film Co Ltd | 磁気記録体 |
JPS59198532A (ja) * | 1983-04-25 | 1984-11-10 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
JPH0766526B2 (ja) * | 1985-06-17 | 1995-07-19 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPH0766514B2 (ja) * | 1985-08-20 | 1995-07-19 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPH0762896B2 (ja) * | 1985-08-20 | 1995-07-05 | 富士写真フイルム株式会社 | 磁気記録媒体 |
JPS62135339A (ja) * | 1985-12-09 | 1987-06-18 | Diafoil Co Ltd | 磁気記録体用ポリエチレン−2,6−ナフタレ−トフイルム |
JPH0640382B2 (ja) * | 1986-10-20 | 1994-05-25 | 富士写真フイルム株式会社 | 磁気記録媒体 |
-
1988
- 1988-10-12 US US07/256,714 patent/US5055349A/en not_active Expired - Lifetime
- 1988-10-14 EP EP88117085A patent/EP0312074B1/de not_active Expired - Lifetime
- 1988-10-14 DE DE3856088T patent/DE3856088T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0312074A3 (de) | 1990-07-11 |
DE3856088D1 (de) | 1998-01-29 |
US5055349A (en) | 1991-10-08 |
EP0312074B1 (de) | 1997-12-17 |
EP0312074A2 (de) | 1989-04-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |