Epson AcuLaser C8600 Reference Manual page 58

Advanced Text/Graph
Suitable for printing high-quality presentation documents that
include text and graphs.
Advanced Graphic/CAD
Suitable for printing high-quality graphs, charts, and photos.
Advanced Photo
Suitable for printing high-quality scanned photos and
digitally-captured images.
Customizing print settings
If you need to change detailed settings, make the settings
manually.
Follow these steps to customize your print settings.
56 Using the Printer Software with Windows