Epson WorkForce Pro WF-M5799 Workgroup Monochrome Multifunction Printer with Replaceable Ink Pack System - Manual (Page 265)

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You see a window like this:
2. Select your product with the FAX option as the printer.
3. To change the Paper Size, Orientation, Color, Image Quality, or Character Density settings, click the
Preferences or Properties button.
Note: If you see a Setup , Printer , or Options button, click it. Then click Preferences or Properties
on the next screen. For more information about selecting fax print settings, click Help .
4. Select the Page Range as necessary. (Leave the Number of copies set to 1 .)
5. Click Print or OK .