To utilize FAX received data again for a host computer and to enable FAX receiving even when the host computer is not prepared.

Concerning a multifunctional printer 200 provided with a printer mechanism 204, a scanner mechanism 208 and a FAX modem 211 or the like, when there is FAX receiving, the state of a host computer 101 is judged and when the host computer 101 is prepared, the FAX received data are transferred to the host computer 101 but when the host computer 101 is not prepared, the FAX received data are preserved in its own memory 210.