Oce Arizona 400 Series GT User Manual page 172

How to Create White Spot Data in Illustrator
Select the white ink object or objects that you want to overprint and place these above
1.
the image data layer that you would like to print. Or if you want them on the same layer
the white ink objects should be in front of the image data.
[119] Overprint Preview
Note:
After you set overprinting options, you should use the Overprint Preview mode (View >
Overprint Preview) to see an approximation of how the overprinting colors will print by
providing an "ink preview" that approximates how transparency and overprinting will
appear in output.
In the Attributes panel, select Overprint Fill, Overprint Stroke, or both.
2.
172 Chapter 9 - How to Work With White Ink and Varnish