Patent ID: 9069552
Filing Date: 2015-06-30
Classification: G06F,Y02D

Abstract:
1. An image forming apparatus, comprising: a functional unit executing a function of the image forming apparatus; a first power supply circuit supplying electric power to said functional unit from a commercial power supply; a second power supply circuit including a self-generation power supply and supplying electric power to said functional unit from said self-generation power supply; and a third power supply circuit including a power storage unit storing electric power and a charging circuit charging said power storage unit upon receipt of supply of electric power from at least one of said commercial power supply and said self-generation power supply, said third power supply circuit supplying electric power to said functional unit from said power storage unit, wherein in accordance with an amount of power supply from said self-generation power supply, higher priority is given to supply of electric power to said functional unit from at least one of said second and third power supply circuits than to supply of electric power from said first power supply circuit, and wherein when the amount of power supply from said self-generation power supply is smaller than a first predetermined value and when the amount of power supply stored in said power storage unit is smaller than a second predetermined value, electric power is supplied to said functional unit from said second and third power supply circuits when the value of a sum total of both the amounts of power supply is larger than or equal to a third predetermined value.