Please look at the picture. At this level of zoom, the fill looks like solid. but further zooming (pdf file) reveals that the solid fill apparently isn't very solid.
I think this is the reason why printers print it on the paper not very very black (i think because new printers offers better resolution). Old printers print this blacker.
At the eagle print dialogue box, solid is checked.
Does anyone know how to print to pdf a really solid fill? Is it imposible? thanks.. =)