An image forming apparatus has a standby mode in which the image forming apparatus is ready for executing image processing and a low power consumption mode which consumes lower electric power than the standby mode. The image processing apparatus includes the following four units. The communication unit is connected to a network and communicates with other devices connected to the network. The request frequency monitoring unit acquires information indicating the frequency of requests for image processing received by the communication unit. The start-up schedule-generating unit generates a start-up schedule of the communication unit according to the information acquired by the request frequency monitoring unit. The power control unit switches, when the image processing apparatus is in the low power consumption mode, power supply modes for the communication unit in accordance with the start-up schedule that is generated by the start-up schedule-generating unit.