Substrates for flexible magnetic recording media: The role of base films for modern performance requirements |
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Authors: | W. Goerlitz A. Ito |
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Affiliation: | Hoechst Diafoil GmbH, Rheingaustrasse 192-196, W-6200, Wiesbaden, Germany |
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Abstract: | The trend in magnetic recording media is towards higher frequencies and larger storage capacities. Base film technology has developed in a manner analogous to corresponding demands on particulate and thin-film media, i.e. in the direction to reduced thickness, smoother surfaces, and very high uniformity. Key elements for the success of polyester films as substrates for all kinds of flexible media are new concepts for pigmentation and surface design. Future digital video recording systems and thin-film media will require new substrates with higher mechanical strength and thermal stability. Trends in base film development including dual-surface films and alternative polymer substrates are discussed. |
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