Pcb negative print out

I just wonder if it is possible to print negative copper views?
My computer is ocupied by kids at the moment…
I have negative photo resist…
I think the lines becomes better.

Yes (and, No).

You can export a Production SVG from Fritzing. Then, in a photo editor, such as Inkscape, change the colors. You can group select… you know how to mess with that sort of thing (if not, check out some YouTube tutorials on Inkscape… for color changing)
Here’s an example:

Or use imagemagic to swap colors…
If it only contains black and white…