Patent ID: 8803038
Filing Date: 2014-08-12
Classification: G03G

Abstract:
1. An apparatus for electrophotographic image formation comprising: an electric load; a fixing unit for fixing a toner image on a sheet; a first heater and a second heater incorporated in the fixing unit, driven based on power from a commercial power source, and independently supplied with or without power; a first switching unit capable of changing a connection status between the fixing unit and the commercial power source; a DC power supply unit for supplying the electric load other than the fixing unit with DC power based on the power from the commercial power source; a second switching unit capable of changing a connection status between the DC power supply unit and the commercial power source; an accumulating unit capable of accumulating DC power to be supplied to the electric load other than the fixing unit; a charging unit for charging the accumulating unit based on the power from the commercial power source; a third switching unit capable of changing a connection status between the charging unit and the commercial power source; a fourth switching unit capable of changing a connection status between the accumulating unit and the electric load; a switching control unit for controlling the four switching units; and a main control unit for controlling the switching control unit based on a state where the first heater and the second heater are supplied with power; wherein the switching control unit switches the connection status of the second, third, and fourth switching units based on the connection status of the first switching unit; and wherein the main control unit inhibits both the accumulating unit and the DC power supply unit from being supplied with power when the main control unit makes the first heater and the second heater supplied with power, inhibits the accumulating unit from being supplied with power and makes the DC power supply unit supplied with power when the main control unit makes the first heater supplied with power and the second heater supplied with no power, and makes both the accumulating unit and the DC power supply unit supplied with power when the main control unit makes the first heater and the second heater supplied with no power.