Patent ID: 6903835

Claim:
A facsimile apparatus adapted to accommodate a plurality of telephone lines connectable with respective different remote partners at a same time, comprising: a first facsimile communication unit connectable with a first telephone line, adapted to reduce power dissipation on standby, and adapted to communicate with a remote partner via the first telephone line; a second facsimile communication unit connectable with a second telephone line, adapted to reduce power dissipation on standby, and adapted to communicate with a remote partner via the second telephone line; a power supply unit adapted to supply power to said first and second facsimile communication units; a detection unit adapted to detect actuation factors for said first and second facsimile communication units; and a controller adapted to, when said first and second facsimile communication units are on standby, control said power supply unit to supply power to said second facsimile communication unit but not to supply power to said first facsimile communication unit, in order to retain said first facsimile communication unit as it is on standby, in response to detection of an actuation factor for said second facsimile communication unit by said detection unit, wherein each of said first and second facsimile communication units can execute communication for image data, independently, and while one of these facsimile communication units is executing the communication, the other facsimile communication unit can be retained on standby, thereby reducing power dissipation, further comprising a document sheet reading unit, wherein said detection unit detects an actuation factor in response to detection of a document sheet in said document sheet reading unit.