Patent ID: 8918659

Claim:
A control device comprising: a power supply circuit that receives power from a power supply and supplies the power to a plurality of loads, the loads including at least a main control unit that controls a main body of an image forming apparatus and a first sub-control unit that performs response action through a network when the supply of power to the main control unit is blocked and the image forming apparatus is connected to the network; and a second sub-control unit that controls the blocking of the supply of power to the main control unit, wherein the second sub-control unit includes a first determination unit that determines whether or not to block the supply of power from the power supply circuit to the main control unit using a predetermined condition; a second determination unit that determines a state of the image forming apparatus with regard to connection to the network when the first determination unit determines to block the supply of power from the power supply circuit to the main control unit; a power control unit that blocks the supply of power from the power supply circuit to the first sub-control unit in accordance with the determination result by the second determination unit; and a detection unit that detects at least one of a factor for resuming the supply of power from the power supply circuit to the main control unit and a factor for blocking the supply of power from the power supply circuit to all or a part of the loads of the image forming apparatus.