If you created your images in the RGB color mode, then when they are converted to CMYK mode for 
output to press, you get a CMYK black which is pretty standard way of converting things.  It should 
not take too much time to fix the problem (select an object with a black line, do a "select all with 
the same line color" command and then change the color to 100% black and maybe also set it to 
overprint. Takes just a minute.

Britt


margaretnelson wrote:
> I just have to share this with the listserv:  I got off the phone a few 
> minutes ago with a very nice client who is perhaps a little unworldly... 
> I would like to think our conversation reflected his viewing me as a 
> friend as well as an illustrator...
> 
> I had done over forty illustrations for his book and had already been 
> paid, but the publisher decided after the fact that they wanted EPS 
> files for everything; and Illustrator, it turned out, had also been 
> turning all my 100% black line drawings to color-mix "black", without my 
> realizing it.  So i had to go through each figure and make sure every 
> element was all black, then save as EPS.  It took quite a while.

> 
> And does anyone know why Illustrator (CS1) was changing my color choice 
> on my line drawings behind my back?
> Thanks,
> Margy