Oki C9300 User Manual page 94

Custom Gamma Adjustment
This option requires the installation and use of the Storage
Device Manager (SDM) utility. See the SDM section for
further instructions.
You will need to create a custom gamma profiles using the SDM
before selecting one here.
1. Click on the arrows to select the profile required.
Black Overprint
This option prevents registration errors and only works for 100%
black text.
1. Click on the checkbox to enable the option.
Printer Halftone
This option prevents the halftone of a high-end graphics application
from printing.
1. Click on the checkbox to enable the option.
NOTE
Mac OS 8.6-9.2.2 Operation • 92