A low power dissipation facsimile apparatus is capable of accommodating a plurality
of lines. This apparatus is arranged to reduce the power consumption still more.
The apparatus comprises a first control unit having a low power dissipation mode,
which controls a first line and the entire body of the facsimile apparatus, and
a second control unit having a low dissipation mode, wherein controls a second
line and transfers communication data to the first control unit. Then, for the
reception only on the first line, and also, for the transmission and the copying
operation, the first control unit rises from the low power dissipation mode to
execute operation accordingly. Also, for the reception only on the second line,
only the second control unit rises from the low power dissipation mode to operate
the reception, and at the same time, during reception or after the completion of
reception, the first control unit rises from the low power dissipation mode to
transfer the received data from the second control unit to the first control unit
for printing out images.