You can print on both sides of the page
automatically, using the product's built-in duplexer (WorkForce 645
Series only). By loading your pages in the automatic document
feeder (ADF), you can also scan, copy, and fax double-sided
documents (WorkForce 645 Series only).
Note: You can also
print double-sided manually. With Windows, you can select the
2-Sided Printing option in the
driver to help you with manual double-sided printing.
access, you can also press the 2-Sided
button (WorkForce 645 Series
only) to access double-sided scan, copy, or fax settings.