DE3071461D1 - Magnetic recording medium having a lubricated contact layer - Google Patents
Magnetic recording medium having a lubricated contact layerInfo
- Publication number
- DE3071461D1 DE3071461D1 DE8181900079T DE3071461T DE3071461D1 DE 3071461 D1 DE3071461 D1 DE 3071461D1 DE 8181900079 T DE8181900079 T DE 8181900079T DE 3071461 T DE3071461 T DE 3071461T DE 3071461 D1 DE3071461 D1 DE 3071461D1
- Authority
- DE
- Germany
- Prior art keywords
- recording medium
- magnetic recording
- contact layer
- lubricated contact
- lubricated
- 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
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
- G11B5/71—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
- G11B5/702—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 bonding agent
- G11B5/7023—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 bonding agent containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
-
- 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
- G11B5/72—Protective coatings, e.g. anti-static or antifriction
- G11B5/725—Protective coatings, e.g. anti-static or antifriction containing a lubricant, e.g. organic compounds
- G11B5/7253—Fluorocarbon lubricant
- G11B5/7257—Perfluoropolyether lubricant
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
- Y10T428/24909—Free metal or mineral containing
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31855—Of addition polymer from unsaturated monomers
- Y10T428/31935—Ester, halide or nitrile of addition polymer
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16694979A JPS5693122A (en) | 1979-12-24 | 1979-12-24 | Magnetic recording medium having lubricated magnetic recording layer |
PCT/JP1980/000321 WO1981001904A1 (en) | 1979-12-24 | 1980-12-23 | Magnetic recording medium having a lubricated contact layer |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3071461D1 true DE3071461D1 (en) | 1986-04-03 |
Family
ID=15840612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8181900079T Expired DE3071461D1 (en) | 1979-12-24 | 1980-12-23 | Magnetic recording medium having a lubricated contact layer |
Country Status (6)
Country | Link |
---|---|
US (1) | US4477520A (de) |
EP (1) | EP0042439B1 (de) |
JP (1) | JPS5693122A (de) |
DE (1) | DE3071461D1 (de) |
IT (1) | IT1209294B (de) |
WO (1) | WO1981001904A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4613548A (en) * | 1985-02-11 | 1986-09-23 | Ethyl Corporation | Polyphosphazene magnetic tape lube |
US7729082B2 (en) * | 2006-07-25 | 2010-06-01 | Hitachi Global Storage Technologies Netherlands B.V. | Application of PFPES for HDD screw lubricant |
FR2946982B1 (fr) * | 2009-06-23 | 2012-12-14 | Commissariat Energie Atomique | Procede de preparation d'un film lubrifiant, support solide ainsi obtenu et kit de preparation. |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL202923A (de) * | 1954-12-20 | |||
GB1152651A (en) * | 1966-05-16 | 1969-05-21 | Agfa Gevaert Nv | Improved Magnetic Recording Material |
US3778308B1 (en) * | 1970-12-18 | 1991-06-04 | Magnetic storage device coating and process | |
NL179616C (nl) * | 1973-04-17 | 1986-10-01 | Basf Ag | Werkwijze ter vervaardiging van magnetische registratieplaten. |
US4046932A (en) * | 1973-04-17 | 1977-09-06 | Basf Aktiengesellschaft | Magnetic recording discs |
JPS51123112A (en) * | 1975-04-18 | 1976-10-27 | Hitachi Maxell Ltd | Magnetic recording medium |
JPS5379502A (en) * | 1976-12-24 | 1978-07-14 | Hitachi Ltd | Manufacture of magnetic disk |
PH14064A (en) * | 1977-05-06 | 1981-01-26 | Pfizer | Phenylgycine derivatives,pharmaceutical compositions and method of use |
JPS583288B2 (ja) * | 1978-04-18 | 1983-01-20 | ティーディーケイ株式会社 | 磁気記録媒体 |
JPS5843814B2 (ja) * | 1978-05-12 | 1983-09-29 | ティーディーケイ株式会社 | 磁気記録媒体 |
DE2839378B1 (de) * | 1978-09-11 | 1979-11-15 | Basf Ag | Magnetischer Aufzeichnungstraeger |
US4267238A (en) * | 1979-12-18 | 1981-05-12 | Minnesota Mining And Manufacturing Company | Flexible magnetic recording media lubricated with fluorinated telechelic polyether polymer |
DE3024918A1 (de) * | 1979-07-02 | 1981-01-22 | Fuji Photo Film Co Ltd | Magnetisches aufzeichnungsmaterial und verfahren zu dessen herstellung |
US4309482A (en) * | 1979-07-19 | 1982-01-05 | Matsushita Electric Industrial Co., Ltd. | Magnetic recording medium |
JPS56159840A (en) * | 1980-05-14 | 1981-12-09 | Hitachi Maxell Ltd | Magnetic recording medium |
-
1979
- 1979-12-24 JP JP16694979A patent/JPS5693122A/ja active Granted
-
1980
- 1980-12-23 WO PCT/JP1980/000321 patent/WO1981001904A1/ja active IP Right Grant
- 1980-12-23 US US06/293,626 patent/US4477520A/en not_active Expired - Lifetime
- 1980-12-23 IT IT8026906A patent/IT1209294B/it active
- 1980-12-23 DE DE8181900079T patent/DE3071461D1/de not_active Expired
- 1980-12-23 EP EP81900079A patent/EP0042439B1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
WO1981001904A1 (en) | 1981-07-09 |
IT1209294B (it) | 1989-07-16 |
US4477520A (en) | 1984-10-16 |
EP0042439A4 (de) | 1983-06-08 |
JPS5693122A (en) | 1981-07-28 |
EP0042439B1 (de) | 1986-02-26 |
EP0042439A1 (de) | 1981-12-30 |
IT8026906A0 (it) | 1980-12-23 |
JPH022220B2 (de) | 1990-01-17 |
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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 |