Image processor

An image processor having a communication unit that communicates with an external apparatus, the image processor comprising:

• an energization switching unit that makes switchover in separately energizing/deenergizing each of a plurality of function blocks, each functional block being a component or an assembly of components executing a given job, independent of energization of the communication unit;
• the communication unit including:
• a time counting unit that counts a present time;
• a job reservation information obtaining unit that obtains a given scheduled time and reserved job information on a reserved job to be executed at the scheduled time from a given memory unit;
• an execution start job identifying unit that identifies the reserved job to be started for execution on the basis of a counted time given by the time counting unit and of the scheduled time obtained by the reservation information obtaining unit;
• and
• an automatic startup controlling unit that changes a state of a function block needed for execution of the reserved job into an energized state, the reserved job being identified by the execution start job identifying unit, through control over the energization switching unit when the function block is in a deenergized state, wherein the communication unit is a network interface card.