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    • 5. 发明专利
    • PHOTOGRAPHIC FILM
    • JPH08334860A
    • 1996-12-17
    • JP10146595
    • 1995-04-25
    • INABA MINORU
    • INABA MINORU
    • G03C9/02G03C1/765G03C9/00
    • PURPOSE: To accurately cut film at a central position between the front and the rear of a perforation and to facilitate film cutting work by recording a cutting mark as a latent image at the edge part of the center between the front and the rear of each perforation by pre-exposure. CONSTITUTION: The perforations 2 are formed near both upper and lower edges of the photographic film 1. The camera using the film 1 is designed to set an exposing position so that a photographic image plane may be positioned in the middle of upper and lower and right and left perforations 2 and to make an image plane pitch equal to the pitch P1 of the perforation 2. By using this camera, the upper and the lower perforations 2 become the mark of a cut surface. A vertical direction cutting mark 3 is recorded as the latent image at the central position at the central position between the front and the rear of the periphery of the perforation 2 on the upper and the lower edge sides of the film 1. Therefore, the cutting mark 3 appears at the upper and lower edges of the vertical center line of a gap G after developing. The film is cut by aiming at the mark 3.