MEDIUM DEFECT INSPECTION DEVICE AND MEDIUM DEFECT INSPECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a defect inspection device inspecting, in particular a defect of a magnetic recording medium where isolated magnetic dots are formed, relating to a recording device recording and playing back information by magnetism.;SOLUTION: The defect inspection device inspecting a defect of the magnetic recording medium comprising the isolated magnetic dots includes: a means fixed to a moving stage and magnetizing the magnetic dots on the magnetic recording medium in one direction by application of a magnetic field; a means controlling intensity of the magnetic field; a means changing a magnetic field incident angle of an applied magnetic field to the surface of the magnetic recording medium; and a means determining the defect of the magnetic recording medium from an output waveform read by a playback head after the magnetic field is applied.;COPYRIGHT: (C)2010,JPO&INPIT