Oki MC770 - Gamma Balance Adjustment (Black Mode)

45584901TH Rev.1
4-9 /
Oki Data CONFIDENTIAL
4.3.2 Gamma balance adjustment (Black Mode)
The gamma balance is adjusted by adjusting the density at the Black Mode. The adjustment is
performedbyselectingitsdensityareafromthefollowing:lowdensity,mediumdensity,andhigh
density.
When“Black”(600dpi)issetforthecolormodeand“Auto”isselectedforthehalftonesetting,
thegammabalancecanbeadjustedineachareaofText,GraphicsandImage.
<Adjustment Mode (05)>
Color
mode
Smooth Detail Smooth Detail Smooth Detail
Remarks
(PS) (PS) (PCL) (PCL) (XPS) (XPS)
Black
(600dpi)
7315-0 7316-0 7317-0 7318-0 7319-0 7320-0 Thelargerthevalueis,the
density of the item to be
adjusted becomes darker.
Acceptable values: 0 to 255
(Default: 128)
7315-1 7316-1 7317-1 7318-1 7319-1 7320-1
7315-2 7316-2 7317-2 7318-2 7319-2 7320-2
Black
(1200
dpi)
7309-0 7310-0 --- --- --- --- Thelargerthevalueis,the
density of the item to be
adjusted becomes darker.
Acceptable values: 0 to 255
(Default: 128)
7309-1 7310-1 --- --- --- ---
7309-2 7310-2 --- --- --- ---
Color
mode
Auto (PS) Auto(PCL)
Remarks
Smooth
(PS)
Detail
(PS)
Smooth
(PCL)
Detail
(PCL)
Smooth
(XPS)
Detail
(XPS)
Black
(600dpi)
7360-0 7361-0 7362-0 7363-0 7364-0 7365-0 Thelargerthevalueis,the
density of the item to be
adjusted becomes darker.
Acceptable values: 0 to 255
(Default: 128)
7360-1 7361-1 7362-1 7363-1 7364-1 7365-1
7360-2 7361-2 7362-2 7363-2 7364-2 7365-2
Color
mode
Auto(XPS)
Remarks
Smooth
(PS)
Detail
(PS)
Smooth
(PCL)
Black
(600dpi)
7366-0 7367-0 7368-0 Thelargerthevalueis,thedensityoftheitemtobe
adjusted becomes darker.
Acceptable values: 0 to 255 (Default: 128)
7366-1 7367-1 7368-1
7366-2 7367-2 7368-2
Notes:
• Besurethatthisadjustmentbemadeafterperforming

P.4-7“4.3.1Automaticgamma
adjustment”.
• Changingtheadjustmentsettinginuencestheadjacentdensityareaslightly.
 E.g.:Whenthevalueofthemediumdensityislarger,theadjacentareasinthelowdensity
and high density range will become slightly darker.