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公开(公告)号：DE3477079D1
公开(公告)日：1989-04-13
申请号：DE3477079
申请日：1984-11-22
Applicant: BASF AG
Inventor： GUETTNER CHRISTINE , HEILMANN PETER DR , KULLMANN UDO DR , MAYER DIETER DR , GRAU WERNER DR
Abstract: Magnetic recording media possess, on a dimensionally stable base which may or may not be provided with a non-magnetic lower layer, a thin ferromagnetic metal layer on which a protective layer consisting of a silicon monoxide/chromium dual coating is applied.
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公开(公告)号：DE3377830D1
公开(公告)日：1988-09-29
申请号：DE3377830
申请日：1983-04-05
Applicant: BASF AG
Inventor： SCHAEFER DIETER DR , FELLEISEN PETER , DOMAS FRIEDRICH , MAYER DIETER DR
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Patent Agency Ranking
公开(公告)号：DE3213508A1
公开(公告)日：1983-10-20
申请号：DE3213508
申请日：1982-04-10
Applicant: BASF AG
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公开(公告)号：DE2928096A1
公开(公告)日：1981-02-05
申请号：DE2928096
申请日：1979-07-12
Applicant: BASF AG
Inventor： FELLEISEN PETER DIPL ING , MAYER DIETER DR , KOESTER EBERHARD DIPL PHYS DR , DOMAS FRIEDRICH DIPL ING , DEIGNER PAUL DIPL CHEM DR
IPC: C09D5/23 , G11B5/70 , G11B5/716 , G11B5/718 , G11B5/84 , G11B5/842 , G11B5/68 , H01F10/00 , B05D5/12
Abstract: A magnetic recording disk comprising a non-magnetic substrate and two or more firmly adhering magnetizable layers applied to one or both sides thereof, the layer located directly on the substrate being magnetically isotropic, while the second layer and any additional layers exhibit orientation of the anisotropic magnetic particles parallel to the substrate and to the envisaged recording direction.
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公开(公告)号：DE2846623A1
公开(公告)日：1980-05-08
申请号：DE2846623
申请日：1978-10-26
Applicant: BASF AG
Inventor： MOTZ HERBERT DIPL ING DR , SCHAEFER DIETER DIPL CHEM DR , HUEBNER WERNER DIPL ING , MAYER DIETER DR
IPC: G11B5/70 , B01F5/06 , B01F15/02 , B05D5/12 , C09D5/23 , C09D7/12 , G11B5/68 , G11B5/84 , G11B5/845 , B05D3/00
Abstract: A process for the manufacture of magnetic recording media by dispersing a mixture of particulate anisotropic magnetic material and additives in a solution of a polymeric binder in an organic solvent, compressing and then releasing the pressure on the dispersion, thereafter applying a layer of the dispersion to a non-magnetizable base, orienting the anisotropic magnetic material by means of a magnetic field, and drying the coating.
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公开(公告)号：DE2459541A1
公开(公告)日：1976-07-01
申请号：DE2459541
申请日：1974-12-17
Applicant: BASF AG
Inventor： KOESTER EBERHARD DIPL PHYS DR , DEIGNER PAUL DR , FALK ROLAND DIPL CHEM DR , UHL KARL DIPL ING DR , SCHAEFER DIETER DIPL CHEM DR , MAYER DIETER DR , MOTZ HERBERT DIPL ING DR , FELLEISEN PETER DIPL ING
Abstract: The invention relates to an improved process for the manufacture of magnetic discs carrying very thin magnetic layers, by applying a fluid dispersion of magnetic materials in a binder mixture to rigid base discs by the spin-coating process. Above the side of the base disc which is to be provided with the magnetic layer, there are arranged means which produce an aerodynamic boundary layer above the discs during rotation of the latter. This avoids the formation of surface irregularities and of coating streaks during production of the layer by spin-coating.
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17.发明专利
公开(公告)号：DE2442707A1
公开(公告)日：1976-03-18
申请号：DE2442707
申请日：1974-09-06
Applicant: BASF AG
Inventor： KOESTER EBERHARD DIPL PHYS DR , NAGEL PETER DIPL ING , JANSEN GERHARD DR , WITTKAMP HEINRICH DIPL ING , MAYER DIETER DR
IPC: G11B15/295 , G11B15/67 , G11B15/66 , G11B5/62 , G11B23/26
Abstract: The threading leader consists of at lest partly of magnetisable material and the winding-on member is equipped with means which generate a magnetic field. These means are used to pull the threading leader onto the winding-on member and lock it with the latter. The threading leader can be guided between sound and winding shafts fitted with discs for fixing on the periphery of the disc of the winding shaft. The threading leader can be constructed as a metal foil strip connected to the magnetic tape. It can also be fitted with a plastic foil as carrier for a support of magnetisable material or metal oxide.
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