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US5343264A Camera using film having magnetic recording portion 失效
相机使用具有磁记录部分的胶片

Camera using film having magnetic recording portion
摘要:
This invention relates to a camera using a film having a magnetic recording portion, which has magnetic heads for recording/reading data on/from a magnetic recording portion formed on part of a photosensitive film, which magnetic heads can be urged/withdrawn against/from the film. In this camera, data representing the number of times that a film feed operation or a photographic operation is performed is stored in a storage unit, and necessity to clean the magnetic heads is determined on the basis of the data. If it is determined that cleaning must be performed, a warning unit performs a warning display or inhibits a photographic operation.
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