| 摘要 |
The device for the modification (distortion) of film patterns which are arranged on a film to be exposed, comprise a holder 15 for clamping in the pattern 19 for carrying out the relative movement over pattern 19 and film 20. A light source is movable on an exposure carriage 1 over pattern and film. Contact pressure rollers 4, 5 which roll on the pattern 19 are fastened at the exposure carriage. In order to design the clamping in a simple manner, the pattern is only clamped in on one side edge parallel to the movement direction of the exposure carriage of the holder 15. The movement of the holder 15 over the film to be exposed and accordingly also relative to the other movement, that of the exposure carriage 1, is transmitted through the coupling to the contact pressure rollers in order to prevent a film distortion by means of this relative movement. This coupling is effected by means of a toothed rack 14 which is fastened on the holder 15, a pinion 8 whose rotational movement is transmitted to the contact pressure rollers via a gear unit 7 engages in the toothed rack 14.
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