A slider of a magnetic disk device has a main body and a protecting layer coated on the main body. The protecting layer has first flat surface which faces the magnetic recording surface of the rotatable disk and which extends in a tangential direction of the disk when the slider is located adjacent to...http://www.google.de/patents/US5198934?utm_source=gb-gplus-sharePatent US5198934 - Magnetic disk device including a slider provided with a solid protecting layer which determines the distance between a magnetic gap and a magnetic disk recording device
