To degausse high coercivity magnetic recording media, a programmable degausser includes at least first and second stations positioned at 45 degrees with respect to an anti-static conveyor belt passing through their centers and at a 90 degree angle with respect to each other. The stations include coils...http://www.google.fr/patents/US4897759?utm_source=gb-gplus-shareBrevet US4897759 - Method and apparatus for erasing information from magnetic material
Method and apparatus for erasing information from magnetic material
