Ultra electronic Prima 3 XID590ie - Manual (Page 22)

3.3.4. Selection of black & white images to print on K-plane
By enabling "Black and White Images" you can specify if black or black & grey images
should be printed on the K plane.
3.3.5. K Plane options
3.3.5.1. Definition of "special colors" for printing on K-plane
If you use special colors to match existing ones on your layout they will be printed on K-plane.
After clicking on the color button, pick up or define a new color as you need. Also, you can add this
color to the "Custom colors" as shown:
Prima 3 Driver Manual
22