How to Fax on HP Envy Photo 7864?
Call your recipient and let them know that you are sending a fax.
Load the original document or picture in the scanner glass of the printer.
Ensure that the input tray of the printer is loaded with suitable sheets.
Type the fax number of your recipient on the control panel of the printer.
Tap the Black, Color or Send button to start sending the fax.
Print a fax report and check if the fax is sent successfully.