Simon, the German community is rather small in comparison to the international English community. So it is probably better to ask in English - if possible.
So the goal is to output a model slice by slice as DXF for a laser with scanner optic.
You managed to create a pattern of curves by intersection, but now you need a method to output them all one by one using the DXF or 2D IGES file format.
I know that we had a customer a couple of years ago, who output HPGL to a stereolitographics machine, but I don't remember, whether he managed to find an automatism to output all slices as a batch instead of doing it manually one-by-one.
But I think he used cross sections instead of intersection curves, so maybe he created drawings from them, to print HPGL. A trail file repeating actions with just a small variation (select a different curve) may be an idea to keep user interaction small.