GB1416946A - Magnetic storage medium with a backing layer containing carbon black - Google Patents
Magnetic storage medium with a backing layer containing carbon blackInfo
- Publication number
- GB1416946A GB1416946A GB4766173A GB4766173A GB1416946A GB 1416946 A GB1416946 A GB 1416946A GB 4766173 A GB4766173 A GB 4766173A GB 4766173 A GB4766173 A GB 4766173A GB 1416946 A GB1416946 A GB 1416946A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon black
- layer
- binder
- magnetic storage
- hydroxyl
- 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
- 239000006229 carbon black Substances 0.000 title abstract 5
- 229920001577 copolymer Polymers 0.000 abstract 4
- 239000011230 binding agent Substances 0.000 abstract 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract 2
- 229920000728 polyester Polymers 0.000 abstract 2
- -1 polyethylene terephthalate Polymers 0.000 abstract 2
- 229920005862 polyol Polymers 0.000 abstract 2
- 150000003077 polyols Chemical class 0.000 abstract 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 abstract 2
- 239000004925 Acrylic resin Substances 0.000 abstract 1
- 229920000178 Acrylic resin Polymers 0.000 abstract 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 1
- 239000005977 Ethylene Substances 0.000 abstract 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract 1
- 229920000877 Melamine resin Polymers 0.000 abstract 1
- 239000004952 Polyamide Substances 0.000 abstract 1
- 229910004298 SiO 2 Inorganic materials 0.000 abstract 1
- 125000001931 aliphatic group Chemical group 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 230000005494 condensation Effects 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 150000002118 epoxides Chemical class 0.000 abstract 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 abstract 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 abstract 1
- MSYLJRIXVZCQHW-UHFFFAOYSA-N formaldehyde;6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound O=C.NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 MSYLJRIXVZCQHW-UHFFFAOYSA-N 0.000 abstract 1
- 150000002531 isophthalic acids Chemical class 0.000 abstract 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical class OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 abstract 1
- 229920002647 polyamide Polymers 0.000 abstract 1
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 1
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 238000010345 tape casting Methods 0.000 abstract 1
- 150000003504 terephthalic acids Chemical class 0.000 abstract 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
- 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
-
- 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
Landscapes
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2250383A DE2250383C3 (de) | 1972-10-13 | 1972-10-13 | Magnetisierbares Speichermedium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1416946A true GB1416946A (en) | 1975-12-10 |
Family
ID=5859013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4766173A Expired GB1416946A (en) | 1972-10-13 | 1973-10-12 | Magnetic storage medium with a backing layer containing carbon black |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS4974909A (enrdf_load_stackoverflow) |
| BE (1) | BE805692A (enrdf_load_stackoverflow) |
| DE (1) | DE2250383C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2203129B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1416946A (enrdf_load_stackoverflow) |
| IT (1) | IT994392B (enrdf_load_stackoverflow) |
| NL (1) | NL7313940A (enrdf_load_stackoverflow) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4645723A (en) * | 1984-02-18 | 1987-02-24 | Basf Aktiengesellschaft | Production of magnetic recording media possessing a backing coating, and magnetic recording media thus produced |
| US4761331A (en) * | 1985-05-30 | 1988-08-02 | Victor Company Of Japan, Ltd. | Magnetic recording medium having a back coat layer containing carbon black treated with fatty acids |
| US4770932A (en) * | 1985-05-29 | 1988-09-13 | Victor Company Of Japan, Ltd. | Magnetic recording medium having an improved back coat layer |
| US4794040A (en) * | 1985-05-29 | 1988-12-27 | Victor Company Of Japan, Ltd. | Magnetic recording medium having a back coat layer containing carbon black having defined ranges of pH and coloring power |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2501372C2 (de) * | 1975-01-15 | 1983-10-27 | Basf Ag, 6700 Ludwigshafen | Flexible Schichtmagnetogrammträger mit Rückseitenbeschichtung und Verfahren zu ihrer Herstellung |
| JPS595429A (ja) * | 1982-06-30 | 1984-01-12 | Hitachi Maxell Ltd | 磁気記録媒体 |
| JPS6080124A (ja) * | 1983-10-07 | 1985-05-08 | Fuji Photo Film Co Ltd | 磁気記録媒体 |
| JPS60229235A (ja) * | 1984-04-27 | 1985-11-14 | Fuji Photo Film Co Ltd | 磁気記録媒体の製法 |
| JPS60238184A (ja) * | 1984-05-12 | 1985-11-27 | Fine Tec Kenkyusho:Kk | 高速で移動する長尺体の表面に液状体を連続的に塗布する方法 |
| JPS61104327A (ja) * | 1984-10-23 | 1986-05-22 | Konishiroku Photo Ind Co Ltd | 磁気記録媒体 |
| JPS61180924A (ja) * | 1984-12-28 | 1986-08-13 | Konishiroku Photo Ind Co Ltd | 磁気記録媒体 |
| KR900006305B1 (ko) * | 1985-07-22 | 1990-08-28 | 니뽕 빅터 가부시끼가이샤 | 자기 기록 매체 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3440091A (en) * | 1965-04-05 | 1969-04-22 | Eastman Kodak Co | Conductive magnetic tape support |
| US3617378A (en) * | 1969-09-29 | 1971-11-02 | Ibm | Magnetic recording media |
-
1972
- 1972-10-13 DE DE2250383A patent/DE2250383C3/de not_active Expired
-
1973
- 1973-10-05 BE BE1005401A patent/BE805692A/xx unknown
- 1973-10-10 NL NL7313940A patent/NL7313940A/xx not_active Application Discontinuation
- 1973-10-11 IT IT53052/73A patent/IT994392B/it active
- 1973-10-12 FR FR7336578A patent/FR2203129B1/fr not_active Expired
- 1973-10-12 GB GB4766173A patent/GB1416946A/en not_active Expired
- 1973-10-13 JP JP48114386A patent/JPS4974909A/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4645723A (en) * | 1984-02-18 | 1987-02-24 | Basf Aktiengesellschaft | Production of magnetic recording media possessing a backing coating, and magnetic recording media thus produced |
| US4770932A (en) * | 1985-05-29 | 1988-09-13 | Victor Company Of Japan, Ltd. | Magnetic recording medium having an improved back coat layer |
| US4794040A (en) * | 1985-05-29 | 1988-12-27 | Victor Company Of Japan, Ltd. | Magnetic recording medium having a back coat layer containing carbon black having defined ranges of pH and coloring power |
| US4761331A (en) * | 1985-05-30 | 1988-08-02 | Victor Company Of Japan, Ltd. | Magnetic recording medium having a back coat layer containing carbon black treated with fatty acids |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2203129B1 (enrdf_load_stackoverflow) | 1979-03-30 |
| JPS4974909A (enrdf_load_stackoverflow) | 1974-07-19 |
| NL7313940A (enrdf_load_stackoverflow) | 1974-03-25 |
| DE2250383B2 (de) | 1977-10-27 |
| DE2250383A1 (de) | 1974-05-02 |
| FR2203129A1 (enrdf_load_stackoverflow) | 1974-05-10 |
| BE805692A (nl) | 1974-04-05 |
| DE2250383C3 (de) | 1978-06-15 |
| IT994392B (it) | 1975-10-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |