| 摘要 |
The device for introducing, extracting and separating films of photosensitive material or copying material in an installation for the continuous exposure to light of this material, comprises endless belt conveyers (7) which are in contact by friction with the back of the films (PB) in order to drive the latter to an exposure chamber provided with a transparent disc (4) of which the length in the material displacement direction is smaller than the width. Drive rollers (5, 6, 5a, 6a) arranged before and after the transparent discs (4) in the displacement direction and acting on the top and on the back of the film form an inlet and an outlet slot located in the plane of the transparent disc (4). The material forming the films is positioned by means of marking points (15, 26). These marking points are arranged before the inlet slot formed by the drive rollers (5, 6), may be displaced in the film displacement direction and in the opposite direction and may be engaged into and disengaged from the perforations (L) of the film.
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