Oki ColorPainter E-64s - Manual (Page 88)

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(2) Justification
Click the gear icon next to Placement, and select Center under Justification.
(3) Edge guard compensation
Right-click on the job data, select Edit, and then select Printer Settings.
Check the Edge Guard Compensation box.
The settings are completed.
The printer will print the data at the center of the media.