printer a facsimilie receiving device and the like fig2 is a side elevation view of the magnetic recording device shown in fig1 referring to fig2 a magnetic recording head 3 comprises a core 31 a coil 32 a core holder 33 and a head holder 34 the recording head 3 moves in the axial direction as shown by arrows by means of a feeding screw 35 and a guide bar 36 a pulse motor 37 rotates the feeding screw 35 a gear 38 is for decreasing the speed a main motor 11 is for rotating the drum 1 side plates 14 and 15 and a bottom plate 16 support the drum 1 the guide bar 36 and the feeding screw 35 fig3 is an embodiment of the present invention illustrating the method for recording the magnetic latent image on the drum 1 the embodiment of the recording method according to the present invention will be explained with respect to the nrz method referring to fig3 and assuming that a pattern as shown in fig3 a is recorded on the drum 1 by way of current in the magnetic core 31 this embodiment of the present invention will now be described 39 indicates a direction of magnetization br br indicates strength of residual magnetization when a magnetic field hs hs on a b h curve as shown in fig4 is applied to the magnetic thin film 2 of the drum 1 40 indicates a part in which the magnetization is reversed the magnetic reverse part 40 magnetically attracts the magnetic toner 7 assuming that the width of the magnetic core 31.