HP Officejet 350 All-in-One Printer - Manual (Page 60)

3. Click the Fax button, the Send Fax dialog box displays.
4. Enter the name and fax number of the recipient. Optionally, you can
also choose to send a PC fax cover sheet with this paper fax by
clicking the Send Cover checkbox and selecting a cover sheet.
5. Enter the number of pages being faxed (the total number placed in the
loading tray, including the cover page, if any).
(The total number of pages is required for the Send Log. The
HP OfficeJet sends all pages you have loaded for faxing regardless of
the number here. It is beneficial to enter the correct number here so
when you reference the Send Log, all of the information regarding
sent faxes is correct. Note, too, that you cannot view a paper fax from
the Send Log; you can view only PC cover sheets for your paper
faxes and PC faxes.)
6. Click the Send Fax button to send your paper fax (and PC fax cover
sheet, if you added one).