| 摘要 |
PURPOSE:To surely cut a long-sized film every block consisting of a plurality of frames in a darkroom by forming a notch at a corresponding position between blocks. CONSTITUTION:A film 28 has a notch 32. A 16mm. film having 20 frames is applied to an endoscopic camera in general, yet recently a long-sized film having 40 or 60 frames is required. Available developing and filing systems are for 20 frames, so it is necessary to correctly cut the long-sized film every block consisting of 20 frames. The position of the notch is set to the next frame of the photographing range of the 20th frame on the right side in the figure, that is, the photographing range of the 21th frame. A notch detecting switch 62 is attached to the film feeder of a camera to detect the notch, and by feeding the frame having the notch without exposure, the cut of a photographed frame is prevented. |
