Brother DCP-8020 - Manual (Page 177)

USING THE WINDOWS ® -BASED BROTHER SMARTUI CONTROL CENTER (FOR WINDOWS ® XP) 10 - 22
To change the program link preferences click the Link Preferences
button.
File Type—From the pull-down list, select the file format you want to
use for documents.
OCR—Select the OCR application from the OCR pull down list.