| 摘要 |
A camera arranged to use a film having a magnetic storage part comprises a magnetic head which is arranged to demagnetize a signal pattern previously recorded in the magnetic storage part of the film; and a control circuit which causes the magnetic head to demagnetize the signal pattern previously recorded in the magnetic storage part with a predetermined demagnetization pattern of a frequency lower than the frequency of the signal pattern and to form information to be recorded in the magnetic storage part of the film in the shape of the demagnetization pattern.
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