Patent ID: 6086674
Filing Date: 2000-07-11
Classification: G11B

Abstract:
Apparatus for applying at least one magnetizable dispersion containing pigments and polymeric binders onto a substrate having a front surface and a back surface opposite to the front surface, said apparatus is comprised of an extrusion coater having a slot with an orifice for transporting the magnetic dispersion onto the substrate linearly moving in a running direction past the coater, the orifice of the slot being essentially opposite a pole surface of a magnet arranged adjacent to the back of the substrate, wherein magnetization direction of the magnet is parallel to the running direction of the substrate and the magnet is covered with a magnetically soft strip, an edge of the pole surface of the magnet which faces downstream with respect to the running direction of the substrate past the coater being flush with a leading edge of the magnetically soft strip and the magnetically soft strip enclosing the magnet at least on two sides in an angular manner.