Invert pcb layout

[Robymam]

What pcb software can invert pcb layout for negative film?

 

[jpanhalt]

That is a common problem, at least with Eagle. The solution is to print to a file as black and white, then invert color with a something like Photoshop. I recall that very old versions of Eagle allowed printing a negative, but I don't have any of those versions (pre-6.0) on my machine, and you can't open anything made with a later version with those old versions.

EDIT:
After a little playing, you can get a .png export as the negative. Just select "export" and "monochrome" Of course then, you still need to be sure the scaling is OK with your printer.

 

[Beau Schwabe]

In Eagle under the CAM job, you can select PS-INVERTED for the output format for the layers you want to invert. (typically top and bottom only)