Patent ID: 8901780
Filing Date: 2014-12-02
Classification: G03G,H02J,Y02B,Y04S

Abstract:
1. An image forming apparatus which converts an AC voltage from a commercial power source into a DC voltage through a rectifying circuit and an electric storage device and supplies the DC voltage to a load through a transformer, wherein a relay is installed between the commercial power source and the rectifying circuit; the electric storage device is capable of charging and discharging, and an electric storage device residual potential monitoring circuit is connected to an output terminal of the electric storage device; the load comprises a load device, a power saving mode control section, and a power saving mode shift detecting section which detects that the load shifts to a power saving mode and outputs a power saving mode shift signal; and if the power saving mode shift signal is input to the electric storage device residual potential monitoring circuit, a relay opening and closing signal for instructing opening and closing of the relay is output from the electric storage device residual potential monitoring circuit, the relay is opened to cut off the supply of the commercial power source, and electric charge charged in the electric storage device is supplied to the power saving mode control section.