Epson Stylus Pro 4000 Reference Manual page 68

ICM
This setting uses the Windows color matching method to
automatically adjust printout colors to match colors on your
screen. Select this setting when printing scanned photographs or
computer graphics.
Note:
Be aware that the ambient light and the age, quality, and settings of the
monitor can affect the quality of your color matching.
When you select this setting, you also need to make the following
settings.
ICC/ICM
Profile
68
Printing with Windows
Select standard or custom ICC/ICM profile.