The HP ENVY 7640 Printer Driver is an all in one machine that combines the functions of a printer with a basic scanner, photocopier and fax machine. People who are looking for a all rounder for their home office will find that the HP ENVY 7640 Printer Driver is a good option. Although the HP ENVY 7640 Printer Driver delivers text documents in high quality, the rather slow speed means that this machine is not ideal for high volume printing, while the quality of photos and graphic documents leaves a little to be desired.