Magnetic display erasing apparatus

A magnetic display erasing apparatus is provided in which a erasing magnetic field can be realized by using a smaller magnet. A magnet (220) is formed by bending a rectangular plate-like magnet having the N-pole on the surface and the S-pole on the back face, into a U-shape so that the N-pole of one end of the magnet opposes the N-pole of the other end thereof symmetrically with respect to a magnetic display sheet (10). The magnetic display sheet (10) is conveyed by conveying means through the U-shaped space between the poles. Because the magnetic field is symmetrical with respect to the plane of the magnetic display sheet (10), an ideal planar magnetic field is attained on the disposition plane of the magnetic display sheet (10). There is no point where the strength of the magnetic field is null Therefore, the whole region of the empty space can be used for erasure and the space utilization efficiency of the magnet is improved.