Tells the color management system to preserve black (k) during cmyk to cmyk transforms.

Normal cmyk to cmyk transforms first convert cmyk to device independent XYZ using the source profile, then from XYZ to cmyk using the destination profile. Since cmyk is an overdetermined colorspace, an XYZ intermediate value can be represented by any number of cmyk values. Setting 'preserveK' to 'true' tries to preserve the 'K' value from source to destination.

None.