Magnetic recording media

US5470650A · kind A · utility

Assignee

• Basi Magnetics GmbH · DE

Inventors

• August Lehner
• Norbert Schneider · Schorndorf, DE
• Hermann Roller · Ludwigshafen, DE
• Werner Balz · Schifferstadt, DE
• Werner Lenz · Bad Dürkheim, DE
• Albert Kohl · Laumersheim, DE

Key dates

• Filing date: Aug 17, 1993
• Grant date: Nov 28, 1995
• Expiry date: Aug 17, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31667
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Magnetic recording media are obtained by preparing a dispersion of anisotropic magnetic material and conventional additives in a solution of a polymeric binder in an organic solvent, applying the dispersion as a layer to a nonmagnetizable substrate, then orienting the anisotropic magnetic material in a magnetic field and solidifying the applied magnetic layer, the magnetic layer containing finely divided organic, hydrophobic supporting pigments and a highly viscous polysiloxane.