HP Officejet 350 All-in-One Printer - Manual (Page 129)

8. If you began this process by opening a file (Method 2), or from the
Send or Receive Log (Method 3), you're asked if you want to save the
changes you've made.
If you click No , the Fax dialog box appears; go to step 10.
If you click Yes , the Save As dialog box appears. Enter a filename
(changing drive and/or directory, if necessary), and click the OK
button. If the file already exists, you're asked if you want to replace
the existing file; click the
Yes button. You'll see "Compressing" and
"Merging" messages, and the Fax dialog box is displayed.
9. In the Fax dialog box, choose a range of pages, and click the OK
button. The Send Fax dialog box appears.
10. Complete the Send Fax dialog box (see "Sending a Fax from a
Windows Application"). When you click the Send Fax button, you'll
see a "Processing" message. Your fax is sent at the scheduled time.