Production of layer-type magnetic recording media

US4673591A · kind A · utility

Assignee

• BASF SE

Inventors

• August Lehner
• Guenter Heil
• Werner Lenz · Bad Dürkheim, DE
• Werner Balz · Schifferstadt, DE
• Albert Kohl · Laumersheim, DE
• Gunnar Schornick · Neuleiningen, DE

Key dates

• Filing date: Jul 26, 1985
• Grant date: Jun 16, 1987
• Expiry date: Jul 26, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/90
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Layer-type magnetic recording media are produced by dispersing a finely divided magnetically anisotropic material in a binder which consists of not less than 30% of a radiation-curable aqueous binder dispersion, applying the dispersion onto a non-magnetic base, orienting the magnetically anisotropic material and drying and crosslinking the applied layer by means of UV or high-energy electron radiation.