Black Scan Speed/Image Quality Priority
You can set whether priority is given to scanning speed or to image quality when scanning the black and white original.
For information on the optional products required to use this function, see "Optional Products Required for Each Function."
1.
Press 
(Settings/Registration).
(Settings/Registration).2.
Press [Function Settings] → [Common] → [Scan Settings].
3.
Press [B&W Scan Speed/Image Quality Priority].
4.
Select [Speed Priority] or [Quality Priority].