[magick-users] CMYK and the 240% limit.

[John Culleton]

convert caan take an image from RGB to CMYK. But now there is a 
further requirement. In the CMYK image at no place can the mixture 
of the four colors exceed 240%. So for a "rich black" a mixture of 
80% C, 80% M, 80% Y and 0 % K would reach that max.  

1. When pure black RGB is converted using the -colorspace parameter 
is there any K in the resulting mixture? 
2. Is there a way to establish the 240% limit in the final product?
3. Is there a means to check on the percentages used in the final 
product?

I am assuming an output profile of U.S. Web Coated (SWOP) v2 which 
will allow up to 300% ink coverage. Is there perhaps a similar 
profile but with 240% limit?
-- 
John Culleton