Since you can send faxes using documents stored in the printer, you can save the time spent scanning documents when you need to send the same document frequently. You can store up to 200 pages of a single document in monochrome. You can store 200 documents in the printer's stored documents box.
Saving 200 documents may not be possible depending on the usage conditions such as the file size of stored documents.
Place the originals.
Select Fax Box on the home screen.
Select Stored Documents, tap 
(Box Menu), and then select Store Fax Data.
In the Fax Settings tab that is displayed, make settings such as the resolution as necessary.
Tap 
to store the document.