| 摘要 |
A photographic film strip has a leader and a trailer, and is to be contained in a cassette having a rotatable spool. A first group of anchoring holes is formed in the trailer along a distal edge thereof, to be anchored on the spool. A second group of anchoring holes is formed at a position which is displaced from the first anchoring hole group toward the leader, and is utilized when the film strip is contained in a preserving cassette after development. In a preferred embodiment, a train of metering perforations are formed along a first lengthwise edge of the photographic film strip of regular intervals so as to be detected by a camera in order to detect positions of original frames. A plurality of take-up holes are formed in the leader, and adapted to being caught by a take-up spool of a camera. The take-up holes are out of alignment with the perforations. The camera has a cassette chamber. A fork is disposed in the cassette chamber over an exposure aperture, and is engaged with one spool end of the cassette on the side of the train of perforations, in order to rotate the spool. An area for recording data is formed on the photographic film strip along a second lengthwise edge which is opposite to the first edge. A magnetic recording head of the camera records data on to the recording area, and is disposed under the exposure aperture.
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