Image forming apparatus that sets a standby time based on a job history and control method of the image forming apparatus

A method for controlling an image forming apparatus including a printer for executing print jobs, the method comprising:

• setting an operational mode of the image forming apparatus to be one of a plurality of modes including a standby mode in which warming up is not performed before printing and a sleep mode in which power consumption of the image forming apparatus is lower than power consumption in the standby mode and warming up is performed before printing;
• and
• setting a standby time that the image forming apparatus is required to wait after printing before transitioning to the sleep mode from the standby mode, the length of the standby time being based on a current time and a job history including a number of print jobs executed by the printer on a prior day during a predetermined time period corresponding to the current time.