Image forming apparatus, energy-conservation control method, and computer program product for energy conservation control

An energy-conservation control method for an image forming apparatus that is connected to a network and configured to transit into an energy-conservation standby state, the energy-conservation control method comprising:

• switching on power supply of a peripheral device for a short time when the image forming apparatus recovers from an energy conservation mode;
• performing an initialization operation over the peripheral device;
• determining whether an option is mounted on the peripheral device;
• and thereafter,
• switching, when the peripheral device is determined not to be used based on a type of a job input into the image forming apparatus over the network, off the power supply of the peripheral device.

A computer program product comprising a computer readable medium having computer program for causing, when executed by a computer, the computer to perform energy conservation control method in an image forming apparatus connected to a network and configured to transit into an energy-conservation standby state by performing:

• switching on power supply of a peripheral device for a short time when the image forming apparatus recovers from an energy conservation mode;
• performing an initialization operation over the peripheral device;
• determining whether an option is mounted on the peripheral device;
• and thereafter,
• switching, when the peripheral device is determined not to be used based on a type of a job input into the image forming apparatus over the network, off the power supply of the peripheral device.