Method for preventing deposition on magnetic head, and photographic film

摘要

A photographic film for information recording 1 has a step difference 3 in the form of a projection on its surface adapted to be pressure contacted with a surface of a magnetic head 2 facing a recording medium. The film 1 also has a transparent magnetic layer. The photographic film may be run with its step difference 3 kept in pressure contact with the surface of the magnetic head 2 facing the recording medium to present film debris from being deposited and stacked on the surface of the magnetic head facing the recording medium to prevent the playback output from being deteriorated.