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公开(公告)号：DE3405960A1
公开(公告)日：1985-08-22
申请号：DE3405960
申请日：1984-02-18
Applicant: BASF AG
Inventor： MELZER MILENA , ROLLER HERMANN , SCHNEIDER NORBERT , FITTERER HORST , MUENZNER WULF DR
IPC: C09D127/06 , C09D5/23 , C09D163/00 , G11B5/72 , G11B5/73 , G11B5/735 , G11B5/842 , G11B5/68 , H01F10/26 , C09D3/48 , B05D5/12
Abstract: A process for the production of magnetic recording media by applying a magnetic layer, which consists essentially of magnetic material finely dispersed in organic polymers, to one side of a flexible base, and applying a non-magnetizable backing coating which is free of inorganic solids to that side of the base which is opposite the magnetic layer, wherein the backing coating consists of two or more polymers which are incompatible with one another and have precipitated from a solvent mixture, and magnetic recording media produced by this process.
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Patent Agency Ranking
公开(公告)号：DE3675989D1
公开(公告)日：1991-01-17
申请号：DE3675989
申请日：1986-06-19
Applicant: BASF AG
Inventor： GRAU WERNER DR , KOHL ALBERT , KOVACS JENOE DR , BALZ WERNER DR , MUENZNER WULF DR
Abstract: Magnetic recording media, consisting of a non-magnetic base and a magnetic layer firmly bonded thereto, exhibit improved properties in sustained operation if, in the course of their production, a dispersion of inorganic particles in a solvent is applied to the magnetic layer, and the solvent is then removed.
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公开(公告)号：DE3571285D1
公开(公告)日：1989-08-03
申请号：DE3571285
申请日：1985-12-16
Applicant: BASF AG
Inventor： SCHOETTLE KLAUS , GLINIORZ LOTHAR , SCHMIDTS KURT , KAMM EUGEN , DIETZE HERBERT , MUENZNER WULF DR , GAISER DIETER , BUHK ARTUR , DREYER JUERGEN
IPC: G11B23/087 , B65H23/30 , G11B15/60 , G11B23/04
Abstract: A guide means for tapes to be transported, in particular in tape cassettes or tape apparatus, comprises a support element and a flexible guide strip, in particular one made of metal foil, fixed on this, and at least one holding element for the end sections of the flexible guide strip. The guide strip possesses a predetermined thickness and may be drop-shaped or pear-shaped in the operating position. The tape guide means may also comprise a support element whose surface is at least partially cylindrical and a flexible guide strip which is fastened thereon. As a separable unit which can be preassembled, the tape guide means can therefore also be employed for automatic manufacture. The tape guide means can be used for tape guides which are either stationary or movable within limits, in the field of tape-like recording media, such as films, magnetic tapes, punched tapes, etc.
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公开(公告)号：AT44328T
公开(公告)日：1989-07-15
申请号：AT85116041
申请日：1985-12-16
Applicant: BASF AG
Inventor： SCHOETTLE KLAUS , GLINIORZ LOTHAR , SCHMIDTS KURT , KAMM EUGEN , DIETZE HERBERT , MUENZNER WULF DR , GAISER DIETER , BUHK ARTUR , DREYER JUERGEN
IPC: G11B15/60
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公开(公告)号：DE3522681A1
公开(公告)日：1987-01-08
申请号：DE3522681
申请日：1985-06-25
Applicant: BASF AG
Inventor： GRAU WERNER DR , KOHL ALBERT , KOVACS JENOE DR , BALZ WERNER DR , MUENZNER WULF DR
Abstract: Magnetic recording media, consisting of a non-magnetic base and a magnetic layer firmly bonded thereto, exhibit improved properties in sustained operation if, in the course of their production, a dispersion of inorganic particles in a solvent is applied to the magnetic layer, and the solvent is then removed.
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公开(公告)号：DE2961179D1
公开(公告)日：1982-01-14
申请号：DE2961179
申请日：1979-01-23
Applicant: BASF AG
Inventor： SCHOETTLE KLAUS , MUENZNER WULF DR , LECHNER HILMAR , WOEPPEL DIETER , GLINIORZ LOTHAR
Abstract: A process and apparatus for the treatment of the recording surface of magnetic recording media using consecutively arranged units for burnishing, cleaning and calendering the web of plastics film provided with a magnetic coating. The process and apparatus of the invention are particularly suitable for the manufacture of magnetic tapes for the recording and playback of video signals.
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