Oce CS550 Pro User Manual page 34

4.2 Adjust the white point (gamma offset)
Select '02 Printer Gamma Offset Auto Adj.'.
3.
[32] Quality Adjustment Menu
Select the following buttons to print the gamma calibration chart.
4.
'Next' and 'Previous' to define the required screening. The default is 'Dot1'
'Adj. data reset' to set the gamma offset values to zero.
'Readjust' to re-adjust the gamma offset.
34 Chapter 4 - Printer calibration