OKI 7100 用户手册

OPERATION > 111

Click on the [General] tab, [Printing Preferences] button, then 
[Job Options] tab

OR

Click on the [Advanced] tab, [Printing Defaults] button, then 
[Job Options] tab.

Select the required printing resolution from [Print Quality].

Set [Toner Save] if required.

Click on [OK] twice and close the printer dialogue box.

Changing print resolution is only applicable to the OKI C7500 model.