| 摘要 |
PROBLEM TO BE SOLVED: To surely recover internal components at the point in time when the service life of them comes to an end. SOLUTION: Photographing is performed while winding a film, and when the whole photographing frames are exposed, the film is rewound, and the rear cover is opened so as to replace the photographic film cartridge. A disk for displaying the number of exposed frames 59 is proceeded by one step linked with the winding operation of one frame of the film, and when the disk is rotated to a position of displaying the final frame, a disk for displaying the number of replacing times 76 is advanced, the number of photographic film cartridge replacing time is displayed on the outer part of the disk 76, and when the disk 76 is rotated by as many as prescribed steps, a locking lever 80 is pressed by a projection 76a, then, the locking lever 80 is rotated to a locking position. When the locking lever 80 is rotated to the locking position, the locking lever 80 is engaged with the rear cover 23 so as to inhibit the subsequent photographic film cartridge from being taken out.
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