PURPOSE: To record data so that a non-magnetized area may exist between the respective bits of data in order to reproduce correct data at the time of reproducing even though the data is recorded in a state where film feeding speed is unstable without writing a synchronizing signal.
CONSTITUTION: A magnetic head 20 magnetizes a magnetic body formed on the surface of a film 21 with a magnetic recording part to the saturation value of N or S. A magnetic information recording and reproducing circuit 19 controls to apply a current to the head 20 so that the magnetic body may be magnetized to the saturation value of N corresponding to the 1st value of bits which form binary data, and apply the current to the head 20 so that the magnetic body may be magnetized to the saturation value of S corresponding to the 2nd value of the bits. Then, the circuit 19 controls to apply the current to the head 20 for a specified time according to the value of the respective bits constituting a series of binary data and to inhibit the application of the current to the head 20 after applying the current.
SHIRO MASAHIRO
WATANABE YOJI
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