JPS6349607U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram of a magnetic head according to an embodiment of this invention, Fig. 2 is a mutual interference diagram of magnetic flux in Fig. 1, Fig. 3 is a magnetic flux flow diagram in Fig. 1, and Fig. 4 is a magnetic flux on the medium. Distribution diagram, Figure 5 is a configuration diagram showing a conventional magnetic head, Figure 6 is a mutual interference diagram of Figure 5, Figure 7 is a diagram showing the configuration of a conventional magnetic head.
The figures are the magnetic flux flow diagram of FIG. 5, and FIG. 8 is the magnetic flux distribution diagram on the medium. In the figure, 4a is an erasing winding, 10 is a read/write core, 11 is a R/W gap,
12 is the R/W winding, 20 and 30 are the erase cores,
21 and 31 are gaps for erasing. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] The eraser consists of a read/write core having a gap and wound with a winding wire, and a pair of cores sandwiching this read/write core, each having a gap for erasing and each having an erasing winding wound around it. and a magnetic flux for erasing in the opposite direction is generated in each of the erasing cores by applying a current to the erasing winding wound around the pair of erasing cores, so that the erasing cores are not recorded on the medium. In a magnetic head for erasing magnetic data, the erasing winding is wound around the pair of erasing cores in a figure-eight shape to form one coil, and when the erasing winding is energized, A magnetic head characterized in that a pair of erasing cores generate erasing magnetic flux in opposite directions.