CMYK PDF to CMYK TIFF

[Tyler Thorsted]

It seems me that the default conversion ghostscript uses is in the RGB  
colorspace. If I feed it a CMYK PDF it gives me an RGB TIFF. I am  
using graphicsMagick to call the conversion and have done everything I  
can find to the delegates file to force conversion to CMYK.

I have been able to convert it over to CMYK with the use of profiles,  
but all the Blacks are now a percentage of all the colors, because it  
is obviously RGB first then converts to CMYK.

Here is the gs command;

gm convert: "gs" -dUseCIEColor -q -dBATCH -dMaxBitmap=50000000 - 
dNOPAUSE -sDEVICE=pnmraw -dTextAlphaBits=4 -dGraphicsAlphaBits=4 - 
g5250x3450 -r600x600  "-sOutputFile=/var/folders/8J/8JMBZ2y52RWf4E 
+kNSglk++++TI/-Tmp-/gmQcRrbP" -- "/var/folders/8J/8JMBZ2y52RWf4E+kNSglk 
++++TI/-Tmp-/gmaSp4DI" -c quit.

Any thoughts?

Tyler Thorsted