RECORDED FILM ERASING DEVICE FOR MAGNETO-OPTICAL RECORDING MEDIUM

PROBLEM TO BE SOLVED: To instantly unify a magnetized direction to a prescribed direction at ordinary temps. by using large-sized electromagnets for strong magnetic field to erase the recorded film of a magnetro-optical recording medium. SOLUTION: One pair of electromagnets 3a, 3b are arranged so as to from a gap 4 parrallel with respect to the transfer direction of a belt conveyor 5, Moreover, the belt conveyor 5 is provided with conveyor units 5b, 5c, 5d, 5e provided with motors for making a conveyor belt run, etc., and a conveyor belt. Then, when an optical disk 2 is suppliied on the conveyor belt and the belt conveyor 5 is driven, an optical disk 2 is passed through the gap 4 formed by the one pair of electromagnets 3a, 3b. At this time, the magnetized direction of the recorded film of the magneto-optical disk 2 is instantly unified to the prescribed direction at ordinary temps.