By bring a master carrier and a slave medium into close contact with uniform
force
when executing magnetic transfer by applying transfer magnetic field in the state
that the master carrier and slave medium is in confronted close contact and received
within a holder, inferiority of transfer such as omission of signals is prevented
and quality of transfer signals is enhanced.
The magnetic transfer apparatus executes magnetic transfer by applying transfer
magnetic field by means of a magnetic field applying apparatus 5 after a
master carrier 3, 4 bearing transfer information and a slave medium 2
to be transferred are brought into confronted close contact and received within
a holder 10, wherein said holder 10 has a substantially circular
shape and in particular, the circularity of holder is not less than 98%, wherein
the flexural rigidity=Ed3/12 determined by Young's modulus E and thickness
d of the holder is in the range of 0.130 kNm2 when the
width of close contact area between the slave medium and master carrier is defined
as 1m, and wherein the practical thickness of the holder is not less than 3 mm
and not more than 15 mm.
