An image processing apparatus includes a managing part to perform a first process to store the log information in a storage unit and a second process necessary to turn OFF a main power, a generating part to generate the log information by performing a third process necessary to turn OFF the main power, and to send to the managing part a first request signal causing the managing part to perform the first process on the generated log information, and a request part to send to the managing part a second request signal causing the managing part to perform the second process and to send to the generating part a third request signal causing the generating part to perform the third process, when a detecting part detects an OFF state of a main power switch.