I've been using rgb 000 for my black. Does it actually get converted to cmyk when printing? What does it get converted to? I'm not sure how it works but the black I have is not completely black. It's a bit shiny on the fabric.
What happens to any color during the print process depends on the process. By that I mean postscript or non-postscript. Non-postscript uses the GDI, (graphic device interface) renders RGB000 to a dense black build. Unfortunately the same process renders C0 M0 Y0 K100 to a dark gray.
strato said:Do colors underneath objects get mixed as well? Probably a stupid question. Lets say the background is a gradient and there is a black object on top. Would the black object have different colors in different places due to the gradient underneath?
of course, that's called "overprint" (it could be applied to fill or outline or both). You can select any vector object and choose overprint with secondary mouse button (or under the Object menu). But for view the results on screen you should enable "simulate overprints" under View menu