Brother MFC-250C Software User's Manual page 29

Change Data Transfer Mode
The Change Data Transfer Mode feature lets you choose print data transfer mode to improve print quality
or print speed.
Recommended Setting
Choose Recommended Setting for general use.
Improved Print Quality
Choose Improved Print Quality for better print quality. Print speed may be reduced slightly, depending
on the print data.
Improved Print Speed
Choose Improved Print Speed for faster print speed.
Printing
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