Canon imagePROGRAF GP-4000 - Manual (Page 601)

Printing with Fluorescent Ink
Create items such as posters in bright and vivid color tones using fluorescent ink.
Using Vivid Color Tones
There are two ways to make your item vivid.
Printing the Entire Item Vividly (Vivid mode)
Make all warm colors bright and vivid.
This is recommended when a photo or illustration contains multiple warm colors such as pink and
orange.
Printing Colors of Specific Areas Vividly (Spot mode)
Make specific colors bright and vivid using pink or orange fluorescent ink.
This is recommended when you want to enhance text or shapes.
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